Research

Shotaro's website

Japanese/English

Research

Research Interests

Martian system

Ionospheric photoelectron distributions and plasma temperature profiles
Escape processes of ion and neutral atmosphere
Effects of an intrinsic magnetic field on the atmospheric escape
Team member on the MAVEN Science Team

Saturnian system

Dust-plasma interaction in E ring
Inner magnetosphere-ionosphere coupling
Plasma-dust-neutral interaction in the plume of Enceladus
Team member on Cassini Ion Neutral Mass Spectrometer

Peer-Reviewed Publications

Selected Publications (ADS Search)

Nakamura, Y., Leblanc, F., Terada, N., Hiruba, S., Murata, I., Nakagawa, H., Sakai, S., Aoki, S., Piccialli, A., Willame, Y., Neary, L., Vandaele, A. C., Murase, K., & Kataoka, R. (2023). Numerical prediction of changes in atmospheric chemical compositions during a solar energetic particle event on Mars. J. Geophys. Res. Space Physics, 128, e2022JA031250. https://doi.org/10.1029/2022JA031250 [PDF]
Nakamura, Y., Terada, N., Koyama, S., Yoshida, T., Karyu, H., Terada, K., Kuroda, T., Kamada, A., Murata, I., Sakai, S., Suzuki, Y., Kobayashi, M., & Leblanc, F. (2023). Photochemical and RadiatiOn Transport model for Extensive USe (PROTEUS). Earth, Planets and Space, 75, 140. https://doi.org/10.1186/s40623-023-01881-w
Satoh, S., Tsuchiya, F., Sakai, S., Kasaba, Y., Yasuda, R., & Kimura, T. (2023). Interpretation of the north-south asymmetric oxygen aurora morphology on Europa using test particle simulation. J. Geophys. Res. Space Physics, 128, e2023JA031519. https://doi.org/10.1029/2023JA031519 [PDF]
Nishioka, T., Seki, K., Sakata, R., Yamamoto, K., Terada, N., Sakai, S., Shinagawa, H., & Nakayama, A. (2023). Study of atmospheric ion escape from exoplanet TOI-700 d: Venus analogs. J. Geophys. Res. Space Physics, 128, e2023JA031405. https://doi.org/10.1029/2023JA031405 [PDF]
Yoshida, T., Aoki, S., Ueno, Y., Terada, N., Nakamura, Y., Shiobara, K., Yoshida, N., Nakagawa, H., Sakai, S., & Koyama, S. (2023). Strong depletion of ¹³C in CO induced by photolysis of CO₂ in the Martian atmosphere calculated by a photochemical model. Planet. Sci. J., 4, 53. https://doi.org/10.3847/PSJ/acc030 [PDF]
Sakai, S., Seki, K., Terada, N., Shinagawa, H., Sakata, R., Tanaka, T., & Ebihara, Y. (2023). Enhanced ion escape rate during IMF rotation under weak intrinsic magnetic field conditions on a Mars-like planet. J. Geophys. Res. Space Physics, 128, e2022JA030510. https://doi.org/10.1029/2022JA030510 [PDF]
Sakata, R., Seki, K., Sakai, S., Terada, N., Shinagawa, H., & Tanaka, T. (2022). Multispecies MHD study of ion escape at ancient Mars: Effects of an intrinsic magnetic field and solar XUV radiation. J. Geophys. Res. Space Physics, 127, e2022JA030427. https://doi.org/10.1029/2022JA030427
Sakakura, K., Seki, K., Sakai, S., Sakata, R., Shinagawa, H., Brain, D. A., McFadden, J. P., Halekas, J. S., DiBraccio, G. A., Jakosky, B. M., Terada, N., & Tanaka, T. (2022). Formation mechanisms of the molecular ion polar plume and its contribution to ion escape from Mars. J. Geophys. Res. Space Physics, 127, e2021JA029750. https://doi.org/10.1029/2021JA029750
Nakamura, Y., Terada, N., Leblanc, F., Rahmati, A., Nakagawa, H., Sakai, S., Hiruba, S., Kataoka, R., & Murase, K. (2022). Modeling of diffuse auroral emission at Mars: Contribution of MeV protons. J. Geophys. Res. Space Physics, 127, e2021JA029914. https://doi.org/10.1029/2021JA029914
Yoshida, N., Terada, N., Nakagawa, H., Brain, D. A., Sakai, S., Nakamura, Y., Benna, M., & Masunaga, K. (2021). Seasonal and dust-related variations in the dayside thermospheric and ionospheric compositions of Mars observed by MAVEN/NGIMS. J. Geophys. Res. Planets, 126, e2021JE006926. https://doi.org/10.1029/2021JE006926
Sakai, S., Seki, K., Terada, N., Shinagawa, H., Sakata, R., Tanaka, T., & Ebihara, Y. (2021). Effects of the IMF direction on atmospheric escape from a Mars-like planet under weak intrinsic magnetic field conditions. J. Geophys. Res. Space Physics, 126, e2020JA028485. https://doi.org/10.1029/2020JA028485 [PDF]
Sakata, R., Seki, K., Sakai, S., Terada, N., Shinagawa, H., & Tanaka, T. (2020). Effects of an intrinsic magnetic field on ion loss from ancient Mars based on multispecies MHD simulations. J. Geophys. Res. Space Physics, 125, e2019JA026945. https://doi.org/10.1029/2019JA026945 [PDF]
Sakai, S., Cravens, T. E., Andersson, L., Fowler, C. M., Mitchell, D. L., Mazelle, C., Thiemann, E. M. B., Eparvier, F. G., Brain, D. A., & Seki, K. (2019). Low electron temperatures observed at Mars by MAVEN on dayside crustal magnetic field lines. J. Geophys. Res. Space Physics, 124, 7629-7637. https://doi.org/10.1029/2019JA026961 [PDF]
Inui, S., Seki, K., Sakai, S., Brain, D. A., Hara, T., McFadden, J. P., Halekas, J. S., Mitchell, D. L., DiBraccio, G. A., & Jakosky, B. M. (2019). Statistical study of heavy ion outflows from Mars observed in the Martian induced magnetotail by MAVEN. J. Geophys. Res. Space Physics, 124, 5482-5497. https://doi.org/10.1029/2018JA026452 [PDF]
Jakosky, B. M., Brain, D., Chaffin, M., Curry, S., Deighan, J., Grebowsky, J., Halekas, J., Leblanc, F., Lillis, R., Luhmann, J. G., Andersson, L., Andre, N., Andrews, D., Baird, D., Baker, D., Bell, J., Benna, M., Bhattacharyya, D., Bougher, S., Bowers, C., Chamberlin, P., Chaufray, J. -Y., Clarke, J., Collinson, G., Combi, M., Connerney, J., Connour, K., Correira, J., Crabb, K., Crary, F., Cravens, T., Crismani, M., Delory, G., Dewey, R., DiBraccio, G., Dong, C., Dong, Y., Dunn, P., Egan, H., Elrod, M., England, S., Eparvier, F., Ergun, R., Eriksson, A., Esman, T., Espley, J., Evans, S., Fallows, K., Fang, X., Fillingim, M., Flynn, C., Fogle, A., Fowler, C., Fox, J., Fujimoto, M., Garnier, P., Girazian, Z., Groeller, H., Gruesbeck, J., Hamil, O., Hanley, K. G., Hara, T., Harada, Y., Hermann, J., Holmberg, M., Holsclaw, G., Houston, S., Inui, S., Jain, S., Jolitz, R., Kotova, A., Kuroda, T., Larson, D., Lee, Y., Lee, C., Lefevre, F., Lentz, C., Lo, D., Lugo, R., Ma, Y. -J., Mahaffy, P., Marquette, M. L., Matsumoto, Y., Mayyasi, M., Mazelle, C., McClintock, W., McFadden, J., Medvedev, A., Mendillo, M., Meziane, K., Milby, Z., Mitchell, D., Modolo, R., Montmessin, F., Nagy, A., Nakagawa, H., Narvaez, C., Olsen, K., Pawlowski, D., Peterson, W., Rahmati, A., Roeten, K., Romanelli, N., Ruhunusiri, S., Russell, C., Sakai, S., Schneider, N., Seki, K., Sharrar, R., Shaver, S., Siskind, D. E., Slipski, M., Soobiah, Y., Steckiewicz, M., Stevens, M. H., Stewart, I., Stiepen, A., Stone, S., Tenishev, V., Terada, N., Terada, K., Thiemann, E., Tolson, R., Toth, G., Trovato, J., Vogt, M., Weber, T., Withers, P., Xu, S., Yelle, R., Yiğit, E., & Zurek, R. (2018). Loss of the Martian atmosphere to space: Present-day loss rates determined from MAVEN observations and integrated loss through time. Icarus, 315, 146-157. https://doi.org/10.1016/j.icarus.2018.05.030
Sakai, S., Seki, K., Terada, N., Shinagawa, H., Tanaka, T., & Ebihara, Y. (2018). Effects of a weak intrinsic magnetic field on atmospheric escape from Mars. Geophys. Res. Lett., 45, 9336-9343. https://doi.org/10.1029/2018GL079972 [PDF]
Inui, S., Seki, K., Namekawa, T., Sakai, S., Brain, D. A., Hara, T., McFadden, J. P., Halekas, J. S., Mitchell, D. L., Mazelle, C., DiBraccio, G. A., & Jakosky, B. M. (2018). Cold dense ion outflow observed in the Martian induced magnetotail by MAVEN. Geophys. Res. Lett., 45, 5283-5289. https://doi.org/10.1029/2018GL077584 [PDF]
Hamil, O., Cravens, T. E., Reedy, N. L., & Sakai, S. (2018). Fate of ice grains in Saturn's ionosphere. J. Geophys. Res. Space Physics, 123, 1429-1440. https://doi.org/10.1002/2017JA024616 [PDF]
Cravens, T. E., Rahmati, A., Fox, J. L., Lillis, R., Bougher, S., Luhmann, J., Sakai, S., Deighan, J., Lee, Y., Combi, M., & Jakosky, B. (2017). Hot oxygen escape from Mars: Simple scaling with solar EUV irradiance. J. Geophys. Res. Space Physics, 122, 1102-1116. https://doi.org/10.1002/2016JA023461 [PDF]
Sakai, S., Cravens, T. E., Omidi, N., Perry, M. E., & Waite Jr., J. H. (2016). Ion energy distributions and densities in the plume of Enceladus. Planet. Space Sci., 130, 60-79. https://doi.org/10.1016/j.pss.2016.05.007 [Accepted version]
Peterson, W. K., Thiemann, E. M. B., Epavier, F. G., Andersson, L., Fowler, C. M., Larson, D., Mitchell, D., Mazelle, C., Fontenla, J., Evans, J. S., Xu, S., Liemohn, M., Bougher, S., Sakai, S., Cravens, T. E., Elrod, M. K., Benna, M., Mahaffy, P., & Jakosky, B. (2016). Photoelectrons and solar ionizing radiation at Mars: Predictions vs. MAVEN observations. J. Geophys. Res. Space Physics, 121, 8859-8870. https://doi.org/10.1002/2016JA022677 [PDF]
Sakai, S., & Watanabe, S. (2016). Plasma dynamics in Saturn's middle-latitude ionosphere and implications for magnetosphere-ionosphere coupling. Icarus, 274, 261-271. https://doi.org/10.1016/j.icarus.2016.03.009 [Accepted version]
Sakai, S., Andersson, L., Cravens, T. E., Mitchell, D. L., Mazelle, C., Rahmati, A., Fowler, C. M., Bougher, S. W., Thiemann, E. M. B., Eparvier, F. G., Fontenla, J. M., Mahaffy, P. R., Connerney, J. E. P., & Jakosky, B. M. (2016). Electron energetics in the Martian dayside ionosphere: Model comparisons with MAVEN data. J. Geophys. Res. Space Physics, 121. 7049-7066. https://doi.org/10.1002/2016JA022782 [PDF]
Sakai, S., Rahmati, A., Mitchell, D. L., Cravens, T. E., Bougher, S. W., Mazelle, C., Peterson, W. K., Eparvier, F. G., Fontenla, J. M., & Jakosky, B. M. (2015). Model insights into energetic photoelectrons measured at Mars by MAVEN. Geophys. Res. Lett., 42, 8894-8900. https://doi.org/10.1002/2015GL065169 [PDF]
Bougher, S., Jakosky, B., Halekas, J., Grebowsky, J., Luhmann, J., Mahaffy, P., Connerney, J., Eparvier, F., Ergun, R., Larson, D., McFadden, J., Mitchell, D., Schneider, N., Zurek, R., Mazelle, C., Andersson, L., Andrews, D., Baird, D., Baker, D. N., Bell, J. M., Benna, M., Brain, D., Chaffin, M., Chamberlin, P., Chaufray, J. -Y., Clarke, J., Collinson, G., Combi, M., Crary, F., Cravens, T., Crismani, M., Curry, S., Curtis, D., Deighan, J., Delory, G., Dewey, R., DiBraccio, G., Dong, C., Dong, Y., Dunn, P., Elrod, M., England, S., Eriksson, A., Espley, J., Evans, S., Fang, X., Fillingim, M., Fortier, K., Fowler, C., Fox, J., Gröller, H., Guzewich, S., Hara, T., Harada, Y., Holsclaw, G., Jain, S. K., Jolitz, R., Leblanc, F., Lee, C. O., Lee, Y., Lefevre, F., Lillis, R., Livi, R., Lo, D., Ma, Y., Mayyasi, M., McClintock, W., McEnulty, T., Modolo, R., Montmessin, F., Morooka, M., Nagy, A., Olsen, K., Peterson, W., Rahmati, A., Ruhunusiri, S., Russell, C. T., Sakai, S., Sauvaud, J. -A., Seki, K., Steckiewicz, M., Stevens, M., Stewart, A. I. F., Stiepen, A., Stone, S., Tenishev, V., Thiemann, E., Tolson, R., Toublanc, D., Vogt, M., Weber, T., Withers, P., Woods, T., & Yelle, R. (2015). Early MAVEN Deep Dip campaign reveals theremosphere and ionosphere variability. Science, 350, aad0459. https://doi.org/10.1126/science.aad0459
Jakosky, B., Grebowsky, J., Luhmann, J., Connerney, J., Eparvier, F., Ergun, R., Halekas, J., Larson, D., Mahaffy, P., McFadden, J., Mitchell, D. L., Schneider, N., Zurek, R., Bougher, S., Brain, D., Ma, Y. J., Mazelle, C., Andersson, L., Andrews, D., Baird, D., Baker, D., Bell, J. M., Benna, M., Chaffin, M., Chamberlin, P., Chaufray, Y. -Y., Clarke, J., Collinson, G., Combi, M., Crary, F., Cravens, T., Crismani, M., Curry, S., Curtis, D., Deighan, J., Delory, G., Dewey, R., DiBraccio, G., Dong, C., Dong, Y., Dunn, P., Elrod, M., England, S., Eriksson, A., Espley, J., Evans, S., Fang, X., Fillingim, M., Fortier, K., Fowler, C. M., Fox, J., Gröller, H., Guzewich, S., Hara, T., Harada, Y., Holsclaw, G., Jain, S. K., Jolitz, R., Leblanc, F., Lee, C. O., Lee, Y., Lefevre, F., Lillis, R., Livi, R., Lo, D., Mayyasi, M., McClintock, W., McEnulty, T., Modolo, R., Montmessin, F., Morooka, M., Nagy, A., Olsen, K., Peterson, W., Rahmati, A., Ruhunusiri, S., Russell, C. T., Sakai, S., Sauvaud, J. -A., Seki, K., Steckiewicz, M., Stevens, M., Stewart, A. I. F., Stiepen, A., Stone, S., Tenishev, V., Thiemann, E., Tolson, R., Toublanc, D., Vogt, M., Weber, T., Withers, P., Woods, T., & Yelle, R. (2015). MAVEN observations of the response of Mars to an interplanetary coronal mass ejection. Science, 350, aad0210. https://doi.org/10.1126/science.aad0210
Ye, S. -Y., Gurnett, D. A., Kurth, W. S., Averkamp, T. F., Morooka, M., Sakai, S., & Wahlund, J. -E. (2014). Electron density inside Enceladus plume inferred from plasma oscillations excited by dust impacts. J. Geophys. Res. Space Physics, 119, 3373-3380. https://doi.org/10.1002/2014JA019861 [PDF]
Sakai, S., Watanabe, S., Morooka, M. W., Holmberg, M. K. G., Wahlund, J. -E., Gurnett, D. A., & Kurth, W. S. (2013). Dust-plasma interaction through magnetosphere-ionosphere coupling in Saturn's plasma disk. Planet. Space Sci., 75. 11-16. https://doi.org/10.1016/j.pss.2012.11.003 [Accepted version]
Sugiyama, K., Suzuki, A., Takahashi, J., Nakamura, T., Manabe, S., Sakai, S., Tsurumaki, R., Nakaoka, R., Tatsumi, S., Tani, I., Katoh, N., Umemoto, T., Oshikawa, T., Mikami, T., Kuramoto, K., Hayashi, Y. -Y., Nakagawa, Y., & Center for Planetary Science (2012), A repository for knowledge of planetary science serving by Center for Planetary Science (CPS). Planetary People, 21, 368-376 (in Japanese). https://doi.org/10.14909/yuseijin.21.4_368 [PDF]

Bulletins, Proceedings and Other Publications

Nakagawa, H., Yoshida, N., Terada, K., Terada, N., Sakai, S., Imamura, T., Fujiwara, H., & Seki, K. (2021). Nightside wave perturbations in the Martian thermosphere. Proceedings of Symposium on Planetary Science 2021, SPS2021_P16. [PDF]
Sakai, S., Sakata, R., Seki, K., Terada, N., Shinagawa, H., Tanaka, T., & Ebihara, Y. (2021). Effects of an intrinsic magnetic field on atmospheric escape from a Mars-like planet. Proceedings of Symposium on Planetary Science 2021, SPS2021_03-06. [PDF]
Sakai, S., Watanabe, S, Morooka, M., Holmberg, M., & Wahlund, J. -E. (2012). Dust-plasma interaction through the magnetosphere-ionosphere coupling in Saturn's inner magnetosphere. Geophysical bulletin of Hokkaido University, 75, 133-144. https://doi.org/10.14943/gbhu.75.133 (in Japanese) [PDF]

Presentations in International Conferences

Nakamura, Y., F. Leblanc, N. Terada, S. Hiruba, I. Murata, H. Nakagawa, S. Sakai, S. Aoki, A. Piccialli, Y. Willame, L. Neary, A. C. Vandaele, K. Murase, R. Kataoka, and K. Seki, Impacts of solar energetic particles on the atmospheric composition on present-day Mars, American Geophysical Union Fall Meeting 2023, P54B-07, Moscone Center, San Francisco, CA, USA, 15 December 2023 (oral).
Hara, T., K. Masunaga, N. Terada, S. Sakai, K. Seki, C. M. Fowler, K. G. Hanley, J. P. McFadden, and S. Curry, On the periodic variation of the ion density in the Martian dayside ionosphere during the regional dust storm, American Geophysical Union Fall Meeting 2023, P43H-3368, Moscone Center, San Francisco, CA, USA, 14 December 2023 (poster).
Sun, W., R. Sakata, Y. Ma, K. Seki, C. T. Russell, N. Terada, S. Sakai, and H. Shinagawa, Comprehensive comparison of two global multi-species MHD models of Mars, American Geophysical Union Fall Meeting 2023, P43G-3345, Moscone Center, San Francisco, CA, USA, 14 December 2023 (poster).
Brain, D. A., M. Chaffin, Z. Berta-Thompson, J. -Y. Chaufray, O. Cohen, T. Cravens, H. Egan, K. France, Y. Futaana, A. Glocer, M. Holmstrom, R. Jarvinen, L. M. Kistler, R. Kopparapu, F. Leblanc, Y. Ma, D. R. Marsh, A. W. Merkel, W. K. Peterson, R. Ramstad, S. Sakai, K. Seki, K. Stevenson, R. J. Strangeway, N. Terada, A. Vidotto, and A. W. Yau, Which star-planet combinations lead to atmospheric retention? American Geophysical Union Fall Meeting 2023, P23A-02, Moscone Center, San Francisco, CA, USA, 12 December 2023 (oral).
Sakata, R., K. Seki, N. Terada, S. Sakai, and H. Shinagawa, Effects of an intrinsic magnetic field on ion escape from ancient Mars based on MAESTRO global MHD simulations, American Geophysical Union Fall Meeting 2023, SM23E-2861, Moscone Center, San Francisco, CA, USA, 12 December 2023 (poster).
Nishioka, T., K. Seki, R. Sakata, K. Yamamoto, S. Sakai, N. Terada, H. Shinagawa, and A. Nakayama, Study of atmospheric ion escape from exoplanet TOI-700 d: Venus analogs, American Geophysical Union Fall Meeting 2023, P21B-3017, Moscone Center, San Francisco, CA, USA, 12 December 2023 (poster).
Koga, R., F. Tsuchiya, S. Sakai, G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, J. Kimura, S. Takagi, M. Kuwabara, and S. Kameda, Analysis of geocoronal variation in 2014 using HISAKI satellite UV observation data, American Geophysical Union Fall Meeting 2023, P21C-3031, Moscone Center, San Francisco, CA, USA, 12 December 2023 (poster).
Satoh, S., F. Tsuchiya, S. Sakai, Y. Kasaba, R. Yasuda, and T. Kimura, Interpretation of the north-south asymmetry of the oxygen aurora morphology on Europa using a test particle simulation, DPS-EPSC 2023, 501.05, Marriott Rivercenter, San Antonio, TX, USA, 6 October 2023 (oral).
Hara, T., K. Masunaga, N. Terada, S. Sakai, T. Osanai, K. Seki, C. M. Fowler, K. G. Hanley, J. P. McFadden, and S. M. Curry, On periodic variations of the ion density in the Martian ionosphere during the dust storm in September 2016, MUAN/MAVEN PSG Joint Meeting, NASA Goddard Institute for Space Studies, New York, NY, USA, 11 September 2023 (oral).
Sun, W., R. Sakata, Y. Ma, K. Seki, N. Terada, S. Sakai, H. Shinagawa, and C. T. Russell, Comprehensive comparison study of two global multi-species MHD models of Mars, MUAN/MAVEN PSG Joint Meeting, NASA Goddard Institute for Space Studies, New York, NY, USA, 11 September 2023 (oral).
Nishioka, T., K. Seki, R. Sakata, K. Yamamoto, N. Terada, S. Sakai, H. Shinagawa, and A. Nakayama, Study of atmospheric ion escape from exoplanet TOI-700 d, 37th URSI General Assembly and Scientific Symposium, Sapporo Convention Center, Sapporo, Japan, 25 August 2023 (oral).
Sakata, R., K. Seki, N. Terada, S. Sakai, and H. Shinagawa, Effects of an intrinsic magnetic field on ion escape from Mars based on newly developed multifluid MHD model simulations, 37th URSI General Assembly and Scientific Symposium, Sapporo Convention Center, Sapporo, Japan, 25 August 2023 (oral).
Kasaba, Y., R. Yasuda, H. Misawa, F. Tsuchiya, Y. Katoh, M. Kitahara, A. Kumamoto, H. Kita, T. Kimura, S. Satoh, S. Sakai, Y. Miyoshi, Y. Kasahara, S. Matsuda, S. Yagitani, M. Ozaki, H. Kojima, S. Kurita, B. Cecconi, G. Fischer, J. -E Wahlund, and JUICE RPWI Team, High Frequency part of Radio & Plasma Wave Investigation (RPWI) aboard JUICE from Japan: Post launch status and its expected sciences for Jupiter and Icy Moons, 37th URSI General Assembly and Scientific Symposium, Sapporo Convention Center, Sapporo, Japan, 24 August 2023 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Enhanced ion escape rate during IMF rotation under weak intrinsic magnetic field conditions on a Mars-like planet, Asia Oceania Geosciences Society 20th Annual Meeting, PS05-A004, SUNTEC Singapore, Singapore, 31 July 2023 (oral).
Kameda, S., A. Nakayama, F. Tsuchiya, G. Murakami, A. Yamazaki, M. Kishida, M. Ikoma, M. Kuwabara, N. Narita, T. Kodama, N. Terada, S. Toriumi, Y. Notsu, K. Namekata, T. Kimura, C. Tao, R. Koga, J. Kimura, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, K. Yoshioka, M. Kagitani, and K. Enya, Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly (LAPYUTA) mission and exospheres of terrestrial exoplanets, Science with the Habitable Worlds Observatory and Beyond, Space Telescope Science Institute, Baltimore, MD, USA, 10 - 14 July 2023 (poster).
Yasuda, R., T. Kimura, H. Misawa, F. Tsuchiya, S. Satoh, Y. Kasaba, S. Sakai, A. Kumamoto, B. Cecconi, C. Louis, and P. Zarka, Numerical simulation of passive radar for ionospheric explorations at Jupiter's icy moons, Japan Geoscience Union Meeting 2023, PPS01-P14, Online / Makuhari Messe, Chiba, Japan, 25 May 2023 (poster).
Satoh, S., F. Tsuchiya, S. Sakai, Y. Kasaba, R. Yasuda, and T. Kimura, Interpretation of the north-south asymmetry of the oxygen aurora morphology on Europa using a test particle simulation, Japan Geoscience Union Meeting 2023, PPS01-07, Online / Makuhari Messe, Chiba, Japan, 25 May 2023 (oral).
Kasaba. Y., T. Tsuchiya, H. Misawa, A. Kumamoto, Y. Katoh, H. Kita, T. Kimura, R. Yasuda, S. Satoh, S. Sakai, Y. Miyoshi, Y. Kasahara, S. Matsuda, S. Yagitani, M. Ozaki, H. Kojima, S. Kurita, B. Cecconi, J. -E. Wahlund, and RPWI team JUICE, Radio & Plasma Wave Investigation (RPWI) aboard JUICE: Post launch status and its expected sciences for Jupiter and Icy Moons, Japan Geoscience Union Meeting 2023, PPS01-03, Online / Makuhari Messe, Chiba, Japan, 25 May 2023 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, S. Kameda, M. Ikoma, N. Narita, T. Kimura, C. Tao, R. Koga, J. Kimura, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, K. Yoshioka, M. Kagitani, M. Kuwabara, and S. Toriumi, Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly (LAPYUTA), Japan Geoscience Union Meeting 2023, PEM11-17, Online / Makuhari Messe, Chiba, Japan, 24 May 2023 (oral).
Nishioka, T., K. Seki, R. Sakata, K. Yamamoto, N. Terada, S. Sakai, H. Shinagawa, and A. Nakayama, Study of atmospheric ion escape from the exoplanet TOI-700 d, Japan Geoscience Union Meeting 2023, PEM11-15, Online / Makuhari Messe, Chiba, Japan, 24 May 2023 (oral).
Sakai, S., A. Nakayama, K. Seki, N. Terada, H. Shinagawa, R. Sakata, F. Leblanc, D. A. Brain, and T. Tanaka, Effects of stellar spectra on atmospheric escape from a Mars-like planet orbiting inactive low-mass stars, Japan Geoscience Union Meeting 2023, PEM11-14, Online / Makuhari Messe, Chiba, Japan, 24 May 2023 (oral).
Yan, M., T. Dang, J. Lei, B. Zhang, N. Terada, S. Sakai, and F. Leblanc, A multifluid MHD study on three-dimensional Kelvin-Helmholtz instability at Mars, Japan Geoscience Union Meeting 2023, PPS05-P17, Online / Makuhari Messe, Chiba, Japan, 23 May 2023 (poster).
Masunaga, K., N. Terada, F. Leblanc, S. Sakai, S. Yokota, Y. Harada, T. Hara, K. Seki, A. Yamazaki, and T. Usui, A technique of retrieving the exospheric number density distribution from pickup ion ring distributions observed by MAVEN/STATIC and its application to future MMX/MSA observations, Japan Geoscience Union Meeting 2023, PPS05-P13, Online / Makuhari Messe, Chiba, Japan, 23 May 2023 (poster).
Nakagawa, H., S. England, N. Yoshida, S. Sakai, Y. Harada, N. Terada, K. Terada, K. Seki, H. Fujiwara, and T. Imamura, Identifying atmospheric waves and solar wind impacts in the Martian thermosphere and ionosphere, Japan Geoscience Union Meeting 2023, PEM12-10, Online / Makuhari Messe, Chiba, Japan, 21 May 2023 (oral).
Tsuchiya, F., Y. Kasaba, I. Yoshikawa, G. Murakami, A. Yamazaki, K. Yoshioka, T. Kimura, C. Tao, R. Koga, H. Kita, K. Masunaga, M. Kagitani, S. Sakai, and M. Kuwabara, Major results from the Hisaki mission and future perspectives, European Geoscience Union General Assembly 2023, EGU23-4751, Online / Austria Center Vienna, Vienna, Austria, 26 April 2023 (oral, invited paper).
Sakai, S., R. Sakata, K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Effects of intrinsic and interplanetary magnetic fields on atmospheric escape from a Mars-like planet, 2023 International Conference of Deep Space Sciences, Online / Hefei Sunac Hotel Complex, Hefei, China, 26 April 2023 (oral, invited paper).
Seki, K., A. Nakayama, R. Sakata, T. Nishioka, T. Imamura, S. Sakai, N. Terada, K. Keika, K. France, and D. Brain, Plasmasphere formation at terrestrial rocky exoplanets around M-dwarf stars and its detectability: Possible evidence for the intrinsic magnetic field and thick atmosphere, American Geophysical Union Fall Meeting 2022, P45C-2498, McCormick Place Convention Center, Chicago, Illinois, 15 December 2022 (poster).
Brain, D. A., W. K. Peterson, O. Cohen, T. Cravens, A. Farrish, K. France, Y. Futaana, K. Garcia-Sage, A. Glocer, O. Q. Hamil, M. Holmstrom, L. M. Kistler, F. Leblanc, A. W. Merkel, A. Nakayama, L. M. Peticolas, R. Ramstad, A. R. Renzaglia, S. Sakai, R. Sakata, N. R. Schnepf, K. Seki, R. J. Strangeway, W. Sun, and A. Vidotto, Atmospheric lifetime for a hypothetical Mars-sized planet orbiting Barnard’s Star, American Geophysical Union Fall Meeting 2022, P42E-2450, McCormick Place Convention Center, Chicago, Illinois, 15 December 2022 (poster).
Nishioka, T., K. Seki, R. Sakata, K. Yamamoto, S. Sakai, N. Terada, H. Shinagawa, and A. Nakayama, Study of atmospheric ion escape from exoplanet TOI-700d, American Geophysical Union Fall Meeting 2022, P42E-2448, McCormick Place Convention Center, Chicago, Illinois, 15 December 2022 (poster).
Brain, D., W. Peterson, O. Cohen, T. Cravens, A. Farrish, K. France, Y. Futaana, K. Garcia-Sage, A. Glocer, O. Hamil, M. Holmström, L. Kistler, F. Leblanc, Y. Ma, A. Merkel, A. Nakayama, L. Peticolas, R. Ramstad, A. Renzaglia, S. Sakai, R. Sakata, E. Sanchez, N. Schnepf, K. Seki, R. Strangeway, W. Sun, N. Terada, A. Vidotto, and L. Waldrop, Atmospheric Lifetime of a Hypothetical Mars-Sized Planet Orbiting Barnard’s Star, Exoplanets in Our Backyard 2, #3048, New Mexico’s Museum of Natural History and Science, Albuquerque, New Mexico, USA, 2 November 2022 (poster).
Nakamura, Y., N. Terada, F. Leblanc, A. Rahmati, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Modeling of diffuse auroral emission on Mars: Contribution of MeV protons, 44th COSPAR Scientific Assembly 2022, C3.2-0010-22, Megaron Athens International Conference Centre, Athens, Greece, 22 July 2022 (oral).
Yamashiro, R., T. Imamura, M. Nakamura, T. Ikari, Y. Kawabata, T. Sato, T. Kouyama, M. Imai, H. Ando, H. Sagawa, Y. Harada, A. Yamazaki, T. Sato, S. Aoki, R. Funase, G. L. Hashimoto, Y. Hirashima, H. Karyu, H. Kashimura, H. Nakagawa, T. Horinouchi, Y. Kasaba, L. Huixin, H. Maezawa, K. Masunaga, M. Sato, S. Murakami, S. Noguchi, N. Sugimoto, H. Ogawa, H. Saito, S. Sakai, N. Sato, K. Sugiyama, M. Taguchi, M. Takagi, N. Terada, M. Yamamoto, Y. Fujisawa, Y. Futaana, N. Ishii, C. Hirose, R. Nakamura, T. Matsumoto, Y. Akiyama, J. Nakatsuka, K. Goto, H. Toyota, and T. Toda, Mission study status of Venus explorer succeeding AKATSUKI, 44th COSPAR Scientific Assembly 2022, B4.1-0031-22, Megaron Athens International Conference Centre, Athens, Greece, 18 July 2022 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, and S. Toriumi, LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) mission, Magnetospheres of the Outer Planets Meeting 2022, University of Liège, Liège, Belgium, 14 July 2022 (poster).
Satoh, S., F. Tsuchiya, S. Sakai, R. Yasuda, and Y. Kasaba, A test particle simulation of Jovian magnetospheric electrons precipitating into Europa's oxygen atmosphere, Magnetospheres of the Outer Planets Meeting 2022, University of Liège, Liège, Belgium, 14 July 2022 (poster).
Nakamura, Y., F. Leblanc, N. Terada, I. Murata, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Numerical Prediction of Changes in Atmospheric Chemical Composition by Precipitation of Solar Energetic Particles at Mars, 7th international workshop on the Mars atmosphere: Modelling and observations, Sorbonne University Auditorium, Paris, France, 16 June 2022 (poster).
Nakamura, Y., N. Terada, F. Leblanc, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Numerical prediction of the effects of solar energetic particle precipitation on the Martian atmospheric chemical composition, European Geoscience Union General Assembly 2022, EGU22-2181, Online / Austria Center Vienna, Vienna, Austria, 26 May 2022 (short oral).
Kimura, T., C. Tao, G. Murakami, K. Yoshioka, F. Tsuchiya, A. Yamazaki, M. Kagitani, R. Koga, K. Masunaga, and S. Sakai, Scientific feasibility study for planetary auroral observations in the LAPYUTA mission, Japan Geoscience Union Meeting 2022, PPS01-P06, Online / Makuhari Messe, Chiba, Japan, 26 May 2022 (onsite) / 3 June 2022 (online) (poster).
Nishioka, T., K. Seki, R. Sakata, K. Yamamoto, S. Sakai, N. Terada, and H. Shinagawa, Study of atmospheric ion escape from exoplanet TOI-700 d based on global multi-species MHD simulations, Japan Geoscience Union Meeting 2022, PAE17-P02, Online / Makuhari Messe, Chiba, Japan, 26 May 2022 (onsite) / 3 June 2022 (online) (poster).
Seki, K., A. Nakayama, R. Sakata, T. Imamura, S. Sakai, N. Terada, K. Keika, K. France, and D. A. Brain, Plasmasphere formation around terrestrial exoplanets: Possible evidence of the exoplanetary intrinsic magnetic field and atmosphere, Japan Geoscience Union Meeting 2022, PAE17-11, Online / Makuhari Messe, Chiba, Japan, 26 May 2022 (oral).
Satoh, S., F. Tsuchiya, S. Sakai, and Y. Kasaba, A test particle simulation of Jovian magnetospheric electrons precipitating to Europa's oxygen atmosphere, Japan Geoscience Union Meeting 2022, PPS01-11, Online / Makuhari Messe, Chiba, Japan, 26 May 2022 (oral).
Koga, R., F. Tsuchiya, G. Murakami, M. Kuwabara, S. Sakai, T. Kimura, K. Yoshioka, J. Kimura, S. Takagi, A. Yamazaki, and S. Kameda, Feasibility study of UV observation of water vapor plumes on icy moons for LAPYUTA mission considering influence of Geocorona, Japan Geoscience Union Meeting 2022, PPS01-10, Online / Makuhari Messe, Chiba, Japan, 26 May 2022 (oral).
Masunaga, K., N. Terada, S. Sakai, S. Yokota, Y. Harada, T. Hara, and T. Usui, Martian exosphere derived from pickup ion measurements: A feasibility study for future MMX mission, Japan Geoscience Union Meeting 2022, PPS04-05, Online / Makuhari Messe, Chiba, Japan, 23 May 2022 (oral, invited paper).
Nakamura, Y., N. Terada, F. Leblanc, A. Rahmati, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Modeling of SEP induced auroral emission: Contribution of MeV protons, American Geophysical Union Fall Meeting, P44B-06, New Orleans Ernest N. Morial Convention Center, New Orleans, Louisiana, USA / Online, 16 December 2021 (oral).
Brain, D. A., W. K. Peterson, O. Cohen, T. Cravens, K. France, Y. Futaana, A. Glocer, M. Holmstrom, L. M. Kistler, Y. Ma, A. W. Merkel, L. M. Peticolas, R. Ramstad, S. Sakai, R. Sakata, K. Seki, R. J. Strangeway, and A. Vidotto, Atmospheric escape rates from Mars – If it orbited an M dwarf star, American Geophysical Union Fall Meeting, SM15A-1957, New Orleans Ernest N. Morial Convention Center, New Orleans, Louisiana, USA / Online, 13 December 2021 (poster).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Impact of the CME-like IMF rotation on ion escape mechanisms from a Mars-like planet under weak intrinsic magnetic field conditions, American Geophysical Union Fall Meeting, SM15A-1955, New Orleans Ernest N. Morial Convention Center, New Orleans, Louisiana, USA / Online, 13 December 2021 (poster).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Ion escape from ancient Mars during CME-like events: Dependence on the planetary intrinsic magnetic field and the solar conditions, American Geophysical Union Fall Meeting, SM15A-1954, New Orleans Ernest N. Morial Convention Center, New Orleans, Louisiana, USA / Online, 13 December 2021 (poster).
Renzaglia, A. R., T. Cravens, O. Q. Hamil, S. Sakai, A. Rahmati, and J. W. Wimmergen, The effect of nitrogen chemistry on photochemical escape of oxygen from Mars, American Geophysical Union Fall Meeting, SM15A-1951, New Orleans Ernest N. Morial Convention Center, New Orleans, Louisiana, USA / Online, 13 December 2021 (poster).
Nakamura, Y., N. Terada, F. Leblanc, A. Rahmati, R. Kataoka, K. Murase, H. Nakagawa, S. Sakai, and S. Hiruba, Modeling of SEP-induced auroral emission: Global diffuse aurora on Mars and polar-glow aurora on Earth, The 12th Symposium on Polar Science, OSo5, Online, 17 November 2021 (oral, invited paper).
Terada, N., K. Terada, S. Sakai, R. Sakata, and K. Seki, DSMC and MHD simulations of atmospheric escape from a terrestrial planet, 5th Asia-Pacific Conference on Plasma Physics, SA/SG-PL2, Online, 27 September 2021 (oral, plenary paper).
Tsuchiya, F., G. Murakami, T. Kimura, R. Koga, C. Tao, K. Masunaga, S. Sakai, J. Kimura, M. Kagitani, K. Yoshioka, A. Yamazaki, and LAPYUTA WG, Future observations of Jovian system with LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), Magnetospheres of the Outer Planets 2021, F2, Online, 12 July 2021 (poster).
Tsuchiya, F., G. Murakami, A. Yamazaki, K. Yoshioka, T. Kimura, C. Tao, R. Koga, H. Kita, M. Kuwabara, K. Masunaga, S. Sakai, M. Kagitani, R. Hikida, T. Sakanoi, H. Misawa, Y. Kasaba, I. Yoshikawa, the Hisaki science team, and the LAPYUTA working team, Io plasma torus and Jovian aurora activities seen by Hisaki and future icy moon UV observation platform, Magnetospheres of the Outer Planets 2021, Online, 12 July 2021 (oral).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T> Tanaka, Dependences of ion escape from ancient Mars on solar wind, solar XUV, and intrinsic magnetic field conditions, Workshop on Influence of a Global Magnetic Field on Ion and Atmospheric Loss and Planetary Habitability, Online, 17 June 2021 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on atmospheric escape from a Mars-like planet under weak intrinsic magnetic field conditions, Workshop on Influence of a Global Magnetic Field on Ion and Atmospheric Loss and Planetary Habitability, Online, 16 June 2021 (poster).
Yoshida, N., N. Terada, H. Nakagawa, D. Brain, S. Sakai, Y. Nakamura, M. Benna, and K. Masunaga, Seasonal and dust related variations of the dayside thermospheric and ionospheric compositions of Mars observed by MAVEN/NGIMS, Workshop on Influence of a Global Magnetic Field on Ion and Atmospheric Loss and Planetary Habitability, Online, 16 June 2021 (poster).
Seki, K., K. Sakakura, S. Sakai, R. Sakata, H. Shinagawa, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, and B. M. Jakosky, Effects of crustal magnetic fields on the atmospheric ion escape from Mars observed by MAVEN, Workshop on Influence of a Global Magnetic Field on Ion and Atmospheric Loss and Planetary Habitability, Online, 16 June 2021 (poster).
Nakagawa, H., S. Sakai, N. Yoshida, Y. Harada, K. Terada, N. Terada, H. Fujiwara, and K. Seki, Relative importance of perturbation sources in the Martian thermosphere and ionosphere from below and above, Workshop on Influence of a Global Magnetic Field on Ion and Atmospheric Loss and Planetary Habitability, Online, 16 June 2021 (poster).
Koga, R., F. Tsuchiya, G. Murakami, and S. Sakai, Estimation of apparent areas of Earth-orbiting UV telescope required to detect water plumes on icy moons, Japan Geoscience Union Meeting 2021, PPS01-P01, Online, 4 June 2021 (poster).
Tsuchiya, F., G. Murakami, R. Koga, M. Kagitani, T. Kimura, K. Yoshioka, A. Yamazaki, S. Sakai, J. Kimura, and C. Tao, Future observations of Juvian system with LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), Japan Geoscience Union Meeting 2021, PPS01-07, Online, 4 June 2021 (oral).
Nakamura, Y., N. Terada, F. Leblanc, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Impacts of solar energetic particles at Mars: Global diffuse aurora and atmospheric chemistry, Japan Geoscience Union Meeting 2021, PEM08-07, Online, 4 June 2021 (oral, invited paper).
Nakamura, Y., N. Terada, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, K. Murase, and F. Leblanc, Modeling of SEP induced auroral emission at Mars: Contribution of precipitating protons and effects of crustal fields, European Geoscience Union General Assembly 2021, EGU21-5649, Online, 29 April 2021 (vPICO).
Sakakura, K., K. Seki, S. Sakai, R. Sakata, H. Shinagawa, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, B. M. Jakosky, N. Terada, and T. Tanaka, Molecular ion contribution to the polar plume from Mars: Effects of solar wind parameters and crustal magnetic fields, American Geophysical Union Fall Meeting 2020, SM051-0009, Virtual Meeting, 16 December 2020 (poster).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Dependence of ion escape from Mars on ancient solar XUV and solar wind conditions, American Geophysical Union Fall Meeting 2020, SM051-0002, Virtual Meeting, 16 December 2020 (poster).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on atmospheric escape from Mars under weak intrinsic magnetic field conditions, American Geophysical Union Fall Meeting 2020, SM043-06, Virtual Meeting, 15 December 2020 (oral).
Yoshida, N., N. Terada, H. Nakagawa, D. A. Brain, and S. Sakai, Seasonal variation of dayside ionospheric compositions coupled with neutral upper atmosphere on Mars, American Geophysical Union Fall Meeting 2020, P047-0008, Virtual Meeting, 11 December 2020 (poster).
Nakamura, Y., N. Terada, H. Nakagawa, S. Sakai, S. Hiruba, and F. Leblanc, Modeling of SEP induced auroral emission at Mars: Proton contribution to the low altitude peak and effects of crustal fields, American Geophysical Union Fall Meeting 2020, P047-0007, Virtual Meeting, 11 December 2020 (poster).
Sakai, S., T. E. Cravens, L. Andersson, C. M. Fowler, D. L. Mitchell, C. Mazelle, E. M. B. Thiemann, F. G. Eparvier, D. A. Brain, and K. Seki, Low electron temperatures observed at Mars by MAVEN on dayside crustal magnetic field lines, JpGU-AGU Joint Meeting 2020, PPS08-02, Virtual Meeting, 12 - 16 July 2020 (iPoster, invited paper).
Sakakura, K., K. Seki, S. Sakai, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, and B. M. Jakosky, Study of molecular ion contribution to polar plume from Mars based on MAVEN observations, JpGU-AGU Joint Meeting 2020, PCG25-07, Virtual Meeting, 12 - 16 July 2020 (iPoster).
Mori, Y., K. Seki, S. Sakai, T. Hara, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, F. G. Eparvier, and B. M. Jakosky, Study of proton escape from Mars based on MAVEN observations, JpGU-AGU Joint Meeting 2020, PCG25-06, Virtual Meeting, 12 - 16 July 2020 (iPoster).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Study of ion loss mechanisms from ancient Mars with a focus on effects of the global intrinsic magnetic field, JpGU-AGU Joint Meeting 2020, PCG25-03, Virtual Meeting, 12 - 16 July 2020 (iPoster).
Renzaglia, A., T. Cravens, C. Fowler, A. Rahmati, S. Sakai, J. Connerney, M. Benna, and L. Andersson, Modeling ionospheric densities and flows in crustal and draped magnetic fields at Mars, European Geosciencea Union General Assembly 2020, D2885, Online, 5 May 2020 (display).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Effects of the intrinsic magnetic field on the ion loss from ancient Mars based on multi-species MHD simulations, American Geophysical Union Fall Meeting, SM52B-08, Moscone Center, San Francisco, California, USA, 13 December 2019 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on atmospheric escape from a Mars-like planet under a weak intrinsic magnetic field condition, Amercitan Geophysical Union Fall Meeting, SM33C-3208, Moscone Center, San Francisco, California, USA, 11 December 2019 (poster).
Renzaglia, A., T. E. Cravens. C. Fowler, A. Rahmati, S. Sakai, J. Connerney, M. Benna, and L. Andersson, Modeling ionospheric densities and flows in crustal and draped magnetic fields at Mars, American Geophysical Union Fall Meeting, P33H-3524, Moscone Center, San Francisco, California, USA, 11 December 2019 (poster).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Effects of a weak intrinsic magnetic field on atmospheric escape from Mars, Planet2/RESCEU Symposium 2019 From Protoplanetary Disks through Planetary System Architecture to Planetary Atmospheres and Habitability, Bankoku Shinryokan, Nago, Okinawa, 16 October 2019 (oral). [Abstract]
Sakakura, K., K. Seki, S. Sakai, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, and B. M. Jakosky, Composition of the ion escape from Mars: Polar plume observatiions by MAVEN, Planet2/RESCEU Symposium 2019 From Protoplanetary Disks through Planetary System Architecture to Planetary Atmospheres and Habitability, 5, Bankoku Shinryokan, Nago, Okinawa, 15 October 2019 (poster).
Mori, Y., K. Seki, S. Sakai, T. Hara, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, F. G. Eparvier, and B. M. Jakosky, Study of proton escape from Mars based on MAVEN observations, Planet2/RESCEU Symposium 2019 From Protoplanetary Disks through Planetary System Architecture to Planetary Atmospheres and Habitability, 4, Bankoku Shinryokan, Nago, Okinawa, 15 October 2019 (poster).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Effects of an intrinsic magnetic field on the ion loss from ancient Mars, Planet2/RESCEU Symposium 2019 From Protoplanetary Disks through Planetary System Architecture to Planetary Atmospheres and Habitability, 1, Bankoku Shinryokan, Nago, Okinawa, 15 October 2019 (poster).
Sakai, S., S. Watanabe, and K. Seki, Plasma dynamics in Saturn's middle-latitude ionosphere and implications for magnetosphere-ionosphere coupling, Magnetospheres of the Outer Planets 2019, P68, Tohoku University, Sendai, Japan, 4 - 5 June 2019 (poster).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, and Y. Ebihara, Effects of the IMF direction on atmospheric escape under a weak intrinsic magnetic field at Mars, Japan Geoscience Union Meeting, PCG25-09, Makuhari Messe, Chiba, Japan, 28 May 2019 (oral). [Abstract]
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Effects of an intrinsic magnetic field on ion loss from ancient Mars, Symposium on Planetary Sciences, Tohoku University, Sendai, Japan, 20 February 2019 (oral).
Inui, S., K. Seki, S. Sakai, D. A. Brain, T. Hara, J. P. McFadden, J. S. Halekas, D. L. Mitchell, G. A. DiBraccio, and B. M. Jakosky, Study of heavy ion outflows from Mars through the induced magnetotail based on MAVEN observations, Symposium on Planetary Sciences, Tohoku University, Sendai, Japan, 20 February 2019 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Effects of an intrinsic magnetic field on atmospheric escape from Mars, Symposium on Planetary Sciences, Tohoku University, Sendai, Japan, 19 February 2019 (oral, invited paper).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Effects of a weak intrinsic magnetic field on atmospheric escape from Mars, American Geophysical Union Fall Meeting, P51H-2978, The Walter E. Washington Convention Center, Washington DC, USA, 14 December 2018. [Abstract]
Inui, S., K. Seki, S. Sakai, D. A. Brain, J. P. McFadden, T. Hara, J. S. Halekas, D. L. Mitchell, G. A. DiBraccio, and B. M. Jakosky, Statistical study of heavy ion outflows from Mars observed in the Martian induced magnetotail by MAVEN, American Geophysical Union Fall Meeting, P51H-2975, The Walter E. Washington Convention Center, Washington, DC, USA, 14 December 2018. [Abstract]
Lillis, R. J., J. -Y. Chaufray, D. J. Pawlowsky, D. L. Mitchell. M. Benna, M. K. Elrod, C. M. Fowler, L. Andesson, S. Xu, and S. Sakai, Warm trapped fossils? Electron structure and dynamics on the nightside of Mars, American Geophysical Union Fall Meeting, P43K-3907, The Walter E. Washington Convention Center, Washington, DC, USA, 13 December 2018. [Abstract]
Sakata, R., S. Sakai, K. Seki, N. Terada, H. Shinagawa, and T. Tanaka, Effects of the planetary intrinsic magnetic field on the ion loss from ancient Martian atmosphere based on global multi-species MHD simulations, 13th International School/Symposium for Space Simulations, 32, University of California, Los Angeles, Los Angeles, California, USA, 11 September 2018 (poster).
Hamil, O. Q., T. E. Cravens, S. Sakai, and N. L. Reedy, The significance of Saturn ring-ice in Cassini proximal observations, Magnetospheres of the Outer Planets 2018, University of Colorado/JSCBB, Boulder, Colorado, USA, 10 July 2018 (poster).
Sakai, S., T. E. Cravens, L. Andersson, C. Fowler, D. Mitchell, C. Mazelle, J. E. P. Connerney, D. A. Brain, E. Thiemann, F. Eparvier, and K. Seki, The distribution of electron temperature in the dayside ionosphere of Mars observed MAVEN, Asia Oceania Geoscience Society 15th Annual Meeting, PS17-A029, Hawaii Convention Centre, Honolulu, Hawaii, USA, 6 June 2018 (oral).
Lillis, R., D. Brain, R. Strangeway, J. Luhmann, Y. Ma, and S. Sakai, The role of magnetic fields in terrestrial planet evolution, 52nd ESLAB Symposium: Comparative Aeronomy and Plasma Environment of Terrestrial Planets, The Space Research and Technology Centre of the European Space Agency, Noordwijk, the Netherlands, 17 May 2018 (oral, invited paper).
Hamil, O. Q., T. Cravens, N. L. Reedy, and S. Sakai, Fate of ice grains in Saturn's ionosphere, American Geophysical Union Fall Meeting, P23B-2717, New Orleans Ernest N. Morial Convention Center, New Orleans, Louisiana, USA, 12 December 2017 (poster). [Abstract]
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Ion escape from the Martian upper atmosphere with a weak intrinsic magnetic field, American Geophysical Union Fall Meeting, P11B-2507, New Orleans Ernest N. Morial Convention Center, New Orleans, Louisiana, USA, 11 December 2017 (poster). [Abstract]
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Ion escape processes of Mars with a weak intrinsic magnetic field, Fourth International Conference on Early Mars: Geologic, Hydrologic, and Climatic Evolution and the Implications for Life, Abstract#3034, Flagstaff, Arizona, 2 October 2017 (oral). [Abstract]
Fowler, C., L. Andersson, D. Andrews, M. Benna, J. Espley, M. Fillingim, J. Fox, J. Halekas, B. Jakosky, J. McFadden, D. Mitchell, S. Sakai, M. Steckiewicz, M. Vogt, P. Withers, and S. Xu, New insights into the Martian ionosphere from the Maven mission, Asia Oceania Geosciences Society Meeting, PS10-A012, Suntec Singapore Convention & Exhibition Centre, Singapore, 10 August 2017.
Sakai, S., K. Seki, N. Terada, T. Tanaka, and H. Shinagawa, Variations of ion escape from the past to present at Mars, JpGU-AGU Joint Meeting 2017, PCG24-P07, Makuhari Messe, Chiba, Japan, 21 May 2017 (poster). [Abstract]
Inui, S., T. Namekawa, K. Seki, S. Sakai, K. Matsunaga, D. A. Brain, J. P. McFaddenn, J. S. Halekas, D. L. Mitchell, J. E. P. Connerney, and B. M. Jakosky, Dense cold ion outflow observed in the Martian induced magnetotail by MAVEN, JpGU-AGU Joint Meeting 2017, PCG24-P06, Makuhari Messe, Chiba, Japan, 21 May 2017 (poster). [Abstract]
Inui, S., T. Namekawa, K. Seki, S. Sakai, K. Matsunaga, D. A. Brain, J. P. McFadden, T. Hara, J. S. Halekas, D. L. Mitchell, J. E. P. Connerney, and B. M. Jakosky, Dense cold ion outflow observed in the Martian induced magnetotail by MAVEN, International Conference on Mars Aeronomy 2017, High Altitude Observatory, Boulder, Colorado, USA, 18 May 2017 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, and T. Tanaka, Effects of a weak intrinsic magnetic field on the Martian plasma environments based on global multi-species MHD simulations, International Conference on Mars Aeronomy 2017, High Altitude Observatory, Boulder, Colorado, USA, 17 May 2017 (oral).
Sakai, S., T. E. Cravens, L. Andersson, C. M. Fowler, E. M. B. Thiemann, F. G. Eparvier, A. Rahmati, N. L. Reedy, S. W. Bougher, D. L. Mitchell, C. Mazelle, M. Benna, P. R. Mahaffy, J. E. P. Connerney, and B. M. Jakosky, Electron temperatures in the dayside ionosphere at Mars, International Conference on Mars Aeronomy 2017, High Altitude Observatory, Boulder, Colorado, USA, 16 May 2017 (oral).
Sakai, S., T. Cravens, L. Andersson, C. M. Fowler, E. Thiemann, F. G. Eparvier, S. W. Bougher, A. Rahmati, N. L. Reedy, D. L. Mitchell, C. X. Mazelle, P. R. Mahaffy, and B. M. Jakosky, MAVEN observations of electron temperatures in the dayside ionosphere at Mars, American Geophysical Union Fall Meeting, P13A-1921, Moscone Center, San Francisco, California, USA, 12 December 2016 (poster). [Abstract]
Garnier, P., M. Steckiewicz, N. Andre, C. X. Mazelle, J. -A. Sauvaud, S. Sakai, T. Cravens, D. L. Mitchell, R. J. Lillis, J. R. Espley, D. Brain, L. Andersson, and B. M. Jakosky, Statistical observations of martian 20-30 eV photoelectron by MAVEN/SWEA, American Geophysical Union Fall Meeting, P13A-1917, Moscone Center, San Francisco, California, USA, 12 December 2016 (poster). [Abstract]
Cravens, T. E., A. Rahmati, H. Madanian, S. Sakai, D. Larson, R. Lillis, J. Halekas, R. Goldstein, J. Burch, and T. Broiles, Pickup ions in the plasma environments of Mars, Comets, and Enceladus, Asia Oceania Geosciences Society Meeting, PS005-A001, China National Convention Centre, Beijing, China, 5 August 2016 (oral, invited paper).
Sakai, S., T. E. Cravens, N. Omidi, M. E. Perry, and J. H. Waite Jr., Ion energy distributions and densities in the plume of Enceladus, CASSINI/MAPS Workshop, University of Michigan, Ann Arbor, Michigan, USA, 13 May 2016 (oral).
Sakai, S., L. Andersson, T. E. Cravens, D. L. Mitchell, C. Mazelle, A. Rahmati, C. M. Fowler, S. W. Bougher, F. G. Eparvier, J. M. Fontenla, P. R. Mahaffy, J. E. P. Connerney, and B. M. Jakosky, Electron energetics in the Martian dayside ionosphere: Model comparisons with MAVEN data, MidAmerican Regional Astrophysics Conference 2016 - Regional meeting of the American Astronomical Society, Univeristy of Missouri Kansas City, Kansas City, Missouri, USA, 9 April 2016 (oral).
Cravens, T. E., A. Rahmati, H. Madanian, S. Sakai, D. Larson, J. Halekas, R. Goldstein, and J. Burch, Pickup ions in the plasma environments of Mars, Comets, and Enceladus, MidAmerican Regional Astrophysics Conference 2016 - Regional meeting of the American Astronomical Society, University of Missouri Kansas City, Kansas City, Missouri, USA, 9 April 2016 (oral).
Cravens, T., A. Rahmati, S. Sakai, H. Madanian, D. E. Larson, R. J. Lillis, J. S. Halekas, R. Goldstein, J. L. Burch, G. B. Clark, and B. M. Jakosky, Pickup ions in the plasma environments of Mars, Comets, and Enceladus, American Geophysical Union Fall Meeting, SM42B-05, Moscone Center, San Francisco, California, USA, 17 December 2015 (oral, invited paper). [Abstract]
Peterson, W. K., E. Thiemann, F. Epavier, L. Andersson, D. E. Larson, D. L. Mitchell, C. X. Mazelle, J. S. Evans, J. M. Fontenla, S. Xu, M. W. Liemohn, S. Sakai, and T. Cravens, Solar ionizing radiation at Mars: Predictions vs. MAVEN observations, American Geophysical Union Fall Meeting, P21A-2051, Moscone Center, San Francisco, California, USA, 15 December 2015 (poster). [Abstract]
Sakai, S., A. Rahmati, T. Cravens, D. L. Mitchell, S. W. Bougher, C. X. Mazelle, W. K. Peterson, F. G. Eparvier, J. M. Fontenla, L. Andersson, J. E. P. Connerney, and B. M. Jakosky, Electron energetics in the Martian ionosphere: Model comparisons with MAVEN data, American Geophysical Union Fall Meeting, P21A-2045, Moscone Center, San Francisco, California, USA, 15 December 2015 (poster). [Abstract]
Cravens, T. E., A. Rahmati, S. Sakai, H. Madanian, D. Larson, R. Lillis, R. Goldstein, J. Burch, and N. Omidi, Pickup ions in the plasma environments of Enceladus, Comets, and Mars, Asia Oceania Geoscience Society 12th Annual Meeting, PS05-A003, Suntec Singapore Convention & Exhibition Centre, Singapore, 5 August 2015 (oral).
Sakai, S., and S. Watanabe, Plasma dynamics in Saturn's middle-latitude ionosphere and implication for magnetosphere-ionosphere coupling, Magnetosphere of the Outer Planets 2015, Georgia Institute of Technology, Atlanta, Georgia, USA, 4 June 2015 (poster).
Sakai, S., T. E. Cravens, N. Omidi, M. E. Perry, and J. H. Waite Jr., Ion energy distributions and densities in the plume of Enceladus, Magnetosphere of the Outer Planets 2015, Georgia Institute of Technology, Atlanta, Georgia, USA, 2 June 2015 (poster).
Sakai, S., T. E. Cravens, N. Omidi, and M. E. Perry, Test particle models of ions in the plume of Enceladus - Interpretation of INMS data, 46th Lunar and Planetary Science Conference, Abstract#1200, The Woodlands Waterway Marriott Hotel and Convention Center, The Woodlands, Texas, USA, 20 March 2015 (oral). [Abstract]
Cravens, T. E., D. Mitchell, S. Sakai, A. Rahmati, S. Bougher, J. Halekas, and C. Mazelle, Auger electrons in the Martian ionosphere: Model comparisons with MAVEN data, 46th Lunar and Planetary Science Conference, Abstract#2581, The Woodlands Waterway Marriott Hotel and Convention Center, The Woodlands, Texas, USA, 19 March 2015 (poster). [Abstract]
Sakai, S., T. E. Cravens, S. Pothapragada, and A. Kumar, Velocity and energy distribution of water group ions around the Enceladus plume, American Geophysical Union Fall Meeting, SM51F-4315, Moscone Center, San Francisco, California, USA, 19 December 2014. [Abstract]
Sakai, S., and S. Watanabe, High-speed flow and high temperature plasma in Saturn's mid-latitude ionosphere, The 40th COSPAR Scientific Assembly, C3.2-0038-14, M. V. Lomonosov Moscow State University, Moscow, Russia, 8 August 2014 (oral). [Abstract]
Tadokoro, H., Y. Sato, K. Sakaguchi, Y. Akiya, and S. Sakai, Public outreach activities organized by young scientists -Steple of Sgepss-, Asia Oceania Geoscience Society 11th Annual Meeting, IG20-A006, Royton Sapporo Hotel, Sapporo, Japan, 1 August 2014 (oral).
Sakai, S., and S. Watanabe, High-speed flow and high temperature plasma in Saturn's mid-latitude ionosphere, Asia Oceania Geoscience Society 11th Annual Meeting, PS08-11-A008, Royton Sapporo Hotel, Sapporo, Japan, 28 July 2014 (oral).
Sakai, S., S. Watanabe, M. W. Morooka, and J. -E. Wahlund, Dust-plasma interaction in Saturn's plasma disk, 41st EPS Conference on Plasma Physics, I2.408, bcc Berlin Congress Center, Berlin, Germany, 24 June 2014 (oral, invited paper). [Abstract]
Ye, S. -Y., D. A. Gurnett, W. S. Kurth, T. F. Averkamp, S. Kempf, H. -W. Hsu, S. Sakai, M. Morooka, and J. -E. Wahlund, Cassini RPWS measurement of dust particles in Saturn's magnetosphere, American Geophysical Union Fall Meeting, P41G-1998, Moscone Center, San Francisco, California, USA, 12 December 2013 (poster). [Abstract]
Engelhardt, I., A. I. Eriksson, J. -E. Wahlund, M. Morooka, and S. Sakai, Plasma structures in the Enceladus plume, European Planetary Science Congress, EPSC2013-945, University College London, London, United Kingdom, 10 September 2013 (poster). [Abstract]
Sakai, S., M. Morooka, J. -E. Wahlund, and S. Watanabe, Plasma and dust characteristics of the Enceladus plume, European Geosciences Union General Assembly 2013, EGU2013-10101, Austria Center Vienna, Vienna, Austria, 11 April 2013 (poster). [Abstract]
Sakai, S., M. Morooka, S. Watanabe, and J. Wahlund, Vertical structure and plasma characteristics of the Enceladus plume, American Geophysical Union Fall Meeting, P31C-1901, Moscone Center, San Francisco, California, USA, 5 December 2012 (poster). [Abstract]
Sakai, S., S. Watanabe, M. W. Morooka, M. K. G. Holmberg, J. -E. Wahlund, D. A. Gurnett and W. S. Kurth, Dust-plasma interaction through magnetosphere-ionosphere coupling in Saturn's plasma disk, European Planetary Science Congress, EPSC2012-433, IFEMA-Feria de Madrid, Madrid, Spain, 25 September 2012 (poster). [Abstract]
Sakai, S., S. Watanabe, and R. Fujii, Slowing ion by a dust-plasma interaction and ionospheric conductivities in Saturn's plasma disk, Japan Geoscience Union Meeting, PPS02-08, Makuhari Messe, Chiba, Japan, 24 May 2012 (oral). [Abstract]
Holmberg, M., J. -E. Wahlund, M. Morooka, and S. Sakai, Structure and dynamics of Saturn's inner magnetosphere - Cassini RPWS/LP observations, European Geosciences Union General Assembly 2012, EGU2012-9625, Austria Center Vienna, Vienna, Austria, 26 April 2012 (poster). [Abstract]
Sakai, S., S. Watanabe, M. Morooka, M. Holmberg, and J. Wahlund, Dust-plasma interaction through the magnetosphere-ionosphere coupling in Saturn's inner magnetosphere, American Geophysical Union Fall Meeting, SM11A-2004, Moscone Center, San Francisco, California, USA, 5 December 2011 (poster). [Abstract]
Holmberg, M., J. -E. Wahlund, M. Morooka, and S. Sakai, Dust-plasma interaction in the rings of Saturn, Rings 2011, Cornell University, Ithaca, New York, USA, 28 July 2011 (poster).
Sakai, S., S. Watanabe, M. Morooka, and J. -E. Wahlund, Dust-plasma interaction in Saturn's plasma disk, Japan Geoscience Union Meeting, PPS001-15, Makuhari Messe, Chiba, Japan, 27 May 2011 (oral). [Abstract]
Sakai, S., S. Watanabe, M. W. Morooka, M. Holmberg, and J. -E. Wahlund, Cassini RPWS/LP observation of ion velocity and modeling in Saturn's plasma disk, Cassini/MAPS Workshop, Historic Inns of Annapolis, Annapolis, Maryland, USA, 29 April 2011 (oral).
Sakai, S., S. Watanabe, M. Morooka, and J. -E. Wahlund, The slowing ion in Saturn's plasma disk, The International Symposium on Planetary Science, P19, Tohoku University, Sendai, Japan, 9 March 2011 (poster).
Nakaoka, K., S. Watanabe, and S. Sakai, A photochemical model of Titan's upper atmosphere and ionosphere, The International Symposium on Planetary Science, P20, Tohoku University, Sendai, Japan, 9 March 2011 (poster).
Sakai, S., S. Watanabe, M. W. Morooka, and J. -E. Wahlund, A dust-plasma interaction in Saturn's E-ring, 5th Alfvén Conference on Plasma Interaction with Non-magnetized Planets/Moons and its Influence on Planetary Evolution, P-52, Hokkaido University, Sapporo, Japan, 5 October 2010 (poster). [Abstract]
Wahlund, J. -E., M. W. Morooka, M. Holmberg, W. M. Farrell, D. A. Gurnett, W. S. Kurth, A. M. Persoon, S. Sakai, M. Shafiq, and S. Watanabe, Dust-plasma interaction in the Saturn plasma disc & Enceladus' plume, European Planetary Science Congress, EPSC2010-787, Pontifical University of Saint Thomas Aquinas, Rome, Itary, 24 September 2010 (oral). [Abstract]
Sakai, S., S. Watanabe, M. W. Morooka, and J. -E. Wahlund, Ion speed in the plasma disc observed by RPWS/LP and its relationship to dusty plasma, CASSINI/MAPS Workshop, Observatorie de Paris, Meudon, France, 8 April 2010 (oral).
Wahlund, J. -E., M. Holmberg, M. W. Morooka, S. Sakai, S. Watanabe, and M. Shafiq, Dust-Plasma Interaction in the E-ring, CASSINI/MAPS Workshop, Observatorie de Paris, Meudon, France, 8 April 2010 (oral).
Morooka, M. W., J. -E. Wahlund, M. Shafiq, W. M. Farrell, D. A. Gurnett, W. S. Kurth, A. I. Eriksson, M. André, M. Holmberg, and S. Sakai, Dusty Plasma near the Enceladus and the E ring, CASSINI/MAPS Workshop, Observatorie de Paris, Meudon, France, 8 April 2010 (oral).
Morooka, M., J. Wahlund, M. Shafiq, W. S. Kurth, D. A. Gurnett, W. Farrell, M. Holmberg, and S. Sakai, Dusty Plasma observed in the E-ring and near Enceladus, American Geophysical Union Fall Meeting, SM32B-03, Moscone Convention Center, San Francisco, California, USA, 16 December 2009 (oral). [Abstract]

Presentations in Japanese Conferences

Saito, Y., T. Kimura, Y. Sekine, N. Ozaki, G. Murakami, S. Sakai, F. Tsuchiya, and All members of the research group on outer planet exploration, Report of the research group on outer planet exploration, The 25th Symposium on Planetary Sciences, 0221-PM18, Tohoku University, Sendai, Japan, 21 February 2024 (oral).
Satoh, S., F. Tsuchiya, S. Sakai, Y. Kasaba, J. Nichols, T. Kimura, R. Yasuda, and V. Hue, Auroral footprints of Europa in Jupiter's atmosphere associated with the plasma sheet parameters, The 25th Symposium on Planetary Sciences, 0221-PM1, Tohoku University, Sendai, Japan, 21 February 2024 (oral).
Nakagawa, H., Y. Harada, Y. Yatsu, N. Takeyama, Y. Nakamura, L. Soret, T. Sakanoi, A. Yamazaki, T. Hara, S. Aoki, S. Sakai, K. Masunaga, A. Saito, Y. Hozumi, M. Fukizawa, N. Schneider, S. Jain, J. Deighan, J. -C. Gerard, J. -Y. Chaufray, K. Enya, K. Ishibashi, P. Hong, T. Takashima, N. Terada, and K. Seki, Mars Aurora Camera onboard the M-MATISSE mission: Mars Magnetosphere ATmosphere Ionosphere and Surface SciencE, The 25th Symposium on Planetary Sciences, 0221-AM14/P-41, Tohoku University, Sendai, Japan, 21 February 2024 (5-min. oral/poster).
Sakata, R., K. Seki, N. Terada, S. Sakai, and H. Shinagawa, Simulation study of carbon and nitrogen ion escape at Mars, The 25th Symposium on Planetary Sciences, 0221-AM10, Tohoku University, Sendai, Japan, 21 February 2024 (oral).
Nakamura, Y., K. Seki, A. Nakayama, and S. Sakai, Effects of solar energetic particle precipitation on the long-term evolution of the early Martian atmosphere, The 25th Symposium on Planetary Sciences, 0220-PM8, Tohoku University, Sendai, Japan, 20 February 2024 (oral).
Kawamura, Y., T. Yoshida, N. Terada, Y. Nakamura, S. Koyama, H. Karyu, K. Terada, and S. Sakai, Reduced water loss by photochemical reaction on terrestrial planets in the runaway greenhouse phase around pre-main-sequence M dwarfs, The 25th Symposium on Planetary Sciences, 0220-AM12/P-24, Tohoku University, Sendai, Japan, 20 February 2024 (5-min. oral/poster).
Sakai, S., A. Nakayama, K. Seki, N. Terada, H. Shinagawa, R. Sakata, F. Leblanc, D. A. Brain, and T. Tanaka, Effects of the XUV spectra on ion escape from a Mars-like planet orbiting inactive low-mass stars, The 25th Symposium on Planetary Sciences, P-31, Tohoku University, Sendai, Japan, 20 - 22 February (poster).
Nakagawa, H., S. Aoki, T. Yoshida, S. Sakai, N. Terada, I. Thomas, J. Erwin, F. Daerden, and A. C. Vandaele, New isotope observation by Martian Moons eXploration and international collaboration of Japan and Europe, The Meteorological Society of Japan Fall Meeting 2023, C156, Sendai International Center, Sendai, 23 October 2023 (oral).
Nishioka, T., K. Seki, K. Yamamoto, R. Sakata, S. Sakai, N. Terada, H. Shinagawa, and A. Nakayama, Study of atmospheric ion escape from exoplanet TOI-700 d: Venus analogs, The Japan Society for Planetary Sciences Fall Meeting 2023, SA-10, Hiroshima City Bunka Koryu Kaikan / JMS Aster Plaza, Hiroshima, Japan, 11 October 2023 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, S. Kameda, M. Kagitani, T. Kimura, C. Tao, R. Koga, J. Kimura, K. Masunaga, S. Sakai, K. Yoshioka, A. Nakayama, M. Ikoma, M. Kuwabara, N. Narita, T. Kodama, S. Toriumi, M. Ouchi, and M. Tanaka, LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) mission: Current status, 154th SGEPSS Fall Meeting, R009-33, Tohoku University, Sendai, Japan, 27 September 2023 (oral).
R. Koga, F. Tsuchiya, G. Murakami, M. Kuwabara, S. Sakai, T. Kimura, K. Yoshioka, J. Kimura, S. Takagi, and S. Kameda, Validation of the geocorona model in comparison with the HISAKI satellite observations, 154th SGEPSS Fall Meeting, R009-19, Tohoku University, Sendai, Japan, 27 September 2023 (oral).
Sakai, S., A. Nakayama, K. Seki, N. Terada, H. Shinagawa, R. Sakata, F. Leblanc, D. A. Brain, and T. Tanaka, Effects of stellar XUV spectra on atmospheric escape from a Mars-like planet orbiting inactive low-mass stars, 154th SGEPSS Fall Meeting, R009-18, Tohoku University, Sendai, Japan, 27 September 2023 (oral).
Sakata, R., W. Sun, Y. Ma, K. Seki, C. T. Russell, N. Terada, S. Sakai, and H. Shinagawa, Comparison study of two global multispecies MHD models of Mars, 154th SGEPSS Fall Meeting, R009-17, Tohoku University, Sendai, Japan, 27 September 2023 (oral).
Yan, M., J. Lei, N. Terada, B. Zhang, T. Dang, S. Sakai, and R. Sakata, Kelvin-Helmholtz instability at Mars by a newly-developed multifluid model, 154th SGEPSS Fall Meeting, R009-15, Tohoku University, Sendai, Japan, 27 September 2023 (oral).
Terada, N., S. Yokota, A. Matsuoka, N. Murata, K. Keika, Y. Harada, K. Masunaga, H. Nakagawa, S. Imajo, Y. Saito, D. Delcoure, L. Hadid, Y. Futaana, K. Seki, K. Asamura, S. Kasahara, M. Nishino, R. Nomura, T. Hara, D. Brain, F. Leblanc, S. Sakai, T. Kimura, Y. Miyake, and H. Usui, Ion and magnetic field observations planned by Martian Moons eXploration (MMX), 154th SGEPSS Fall Meeting, R009-14, Tohoku University, Sendai, Japan, 27 September 2023 (oral).
Kasaba, Y., F. Tsuchiya, K. Misawa, Y. Katoh, H. Kita, T. Kimura, A. Kumamoto, R. Yasuda, S. Satoh, S. Sakai, Y. Miyake, Y. Kasahara, S. Matsuda, S. Yagitani, M. Ozaki, H. Kojima, S. Kurita, B. Cecconi, J. -E. Wahlund, and JUICE RPWI team, Radio & Plasma Wave Investigation (RPWI) aboard JUICE: The first half year of the long travel to Jupiter and Icy Moons, 154th SGEPSS Fall Meeting, R009-12, Tohoku University, Sendai, Japan, 26 September 2023 (oral).
Yasuda, R., T. Kimura, H. Misawa, F. Tsuchiya, S. Satoh, Y. Kasaba, S. Sakai, and A. Kumamoto, Feasibility study of ionospheric explorations at Jupiter's icy moons using Faraday rotation effect, 154th SGEPSS Fall Meeting, R009-10, Tohoku University, Sendai, Japan, 26 September 2023 (oral).
Nakamura, Y., K. Seki, S. Sakai, and N. Terada, Development of a photochemical model for the impacts of solar energetic particles on prebiotic chemistry on early Mars, 154th SGEPSS Fall Meeting, R009-P19, Tohoku University, Sendai, Japan, 25 September 2023 (poster).
Satoh, S., F. Tsuchiya, S. Sakai, Y. Kasaba, J. Nichols, T. Kimura, and R. Yasuda, Analyzing brightness of Europa's auroral footprint with the HST/STIS dataset taken in 2014 and 2022, 154th SGEPSS Fall Meeting, R009-P11, Tohoku University, Sendai, Japan, 25 September 2023 (poster).
Sakai, S., A. Nakayama, K. Seki, N. Terada, H. Shinagawa, R. Sakata, F. Leblanc, D. A. Brain, and T. Tanaka, Effects of stellar XUV spectra on atmospheric escape from a Mars-like planet, Astronomical Society of Japan Fall Meeting 2023, Z417a, Nagoya University, Nagoya, Japan, 21 September 2023 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, S. Kameda, K. Masunaga, S. Sakai, K. Yoshioka, M. Kagitani, A. Nakayama, M. Ikoma, M. Kuwabara, N. Narita, T. Kodama, N. Terada, S. Toriumi, Y. Notsu, K. Namekata, T. Kimura, C. Tao, R. Koga, J. Kimura, M. Ouchi, M. Tanaka, K. Enya, and LAPYUTA Team, LAPYUTA Mission, Astronomical Society of Japan Fall Meeting 2023, Z416r, Nagoya University, Nagoya, Japan, 21 September 2023 (oral, Keynote lecture).
Kimura, T., C. Tao, G. Murakami, K. Yoshioka, F. Tsuchiya, A. Yamazaki, M. Kagitani, R. Koga, K. Masunaga, S. Sakai, LAPYUTA Working Group, Scientific feasibility study for planetary auroral observations for the LPYUTA mission, Japan Geoscience Union Meeting 2023, PCG19-P09, Online / Makuhari Messe, Chiba, Japan, 26 May 2023 (poster).
Masunaga, K., S. Sakai, S. Aoki, F. Tsuchiya, G. Murakami, A. Yamazaki, K. Yoshioka, T. Kimura, M. Kagitani, and R. Koga, Feasibility study on LAPYUTA observations of terrestrial planets, Japan Geoscience Union Meeting 2023, PCG19-P08, Online / Makuhari Messe, Chiba, Japan, 26 May 2023 (poster).
Maeda, Y., T. Kimura, M. Tokushige, E. Nakata, S. Sakai, and N. Terada, A 3D magnetohydrodynamic modeling for atmospheric escape from Earth during the geomagnetic reversal event, Japan Geoscience Union Meeting 2023, PCG19-P01, Online / Makuhari Messe, Chiba, Japan, 26 May 2023 (poster).
Nakamura, Y., F. Leblanc, J. -C. Gérard, L. Soret, N. Terada, H. Nakagawa, S. Sakai, K. Murase, R. Kataoka, D. A. Brain, and K. Seki, Three-dimensional simulation of the Martian diffuse auroral emission in the crustal magnetic field regions, Japan Geoscience Union Meeting 2023, PCG19-08, Online / Makuhari Messe, Chiba, Japan, 26 May 2023 (oral).
Sakata, R., K. Seki, S. Sakai, H. Shinagawa, and N. Terada, Study on effects of an intrinsic magnetic field on ancient Mars with a new multifluid MHD model, Japan Geoscience Union Meeting 2023, PCG19-05, Online / Makuhari Messe, Chiba, Japan, 26 May 2023 (oral).
Fukizawa, M., K Murase, Y. Ampuku, A. Kazama, S. Sakai, H. Ohya, S. Sakanaka, K. Asamura, Young outreach activity STEPLE, What do aurora researchers do?, Japan Geoscience Union Meeting 2023, O02-P06, Online / Makuhari Messe, Chiba, Japan, 21 May 2023 (poster, invited paper).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, S. Toriumi, and LAPYUTA Working Group, Feasible study of LAPYUTA mission, Astronomical Society of Japan, V241a, Rikkyo University, Tokyo, 15 March 2023 (oral).
Yasuda, R., T. Kimura, H. Misawa, F. Tsuchiya, S. Satoh, Y. Kasaba, S. Sakai, and A. Kumamoto, Numerical simulation of passive radar for ionospheric explorations at Jupiter's icy moons, The 24th Symposium on Planetary Sciences, 0221-PM7, Tohoku University, Sendai, 21 February 2023 (oral).
Nishioka, T., K. Seki, R. Sakata, K. Yamamoto, S. Sakai, N. Terada, H. Shinagawa, and A. Nakayama, Study of atmospheric ion escape from exoplanet TOI-700 d, The 24th Symposium on Planetary Sciences, 0221-AM9, Tohoku University, Sendai, 21 February 2023 (oral).
Sakata, R., K. Seki, N. Terada, S. Sakai, and H. Shinagawa, Effects of an intrinsic magnetic field on ion escape from Mars based on newly developed multifluid MHD model simulations, The 24th Symposium on Planetary Sciences, 0221-AM7, Tohoku University, Sendai, 21 February 2023 (oral).
Satoh, S., F. Tsuchiya, S. Sakai, Y. Kasaba, R. Yasuda, and T. Kimura, A test particle simulation for the Jovian magnetospheric electrons precipitating into Europa's oxygen atmosphere, The 24th Symposium on Planetary Sciences, P-30, Tohoku University, Sendai, 20 - 22 February 2023 (poster).
Nakagawa, H., T. Yoshida, S. Sakai, S. Aoki, and N. Terada, New isotope observations of Mars atmospheric evolution: International collaboration of European and Japanese Mars exploration missions, The 24th Symposium on Planetary Sciences, P-22, Tohoku University, Sendai, 20 - 22 February 2023 (poster).
Sakai, S., A. Nakayama, K. Seki, N. Terada, H. Shinagawa, R. Sakata, and T. Tanaka, Effects of stellar spectra on ion escape from a Mars-like planet orbiting inactive low-mass stars, The 24th Symposium on Planetary Sciences, P-11, Tohoku University, Sendai, 20 - 22 February 2023 (poster).
Osanai, T., N. Terada, K. Masunaga, T. Hara, and S. Sakai, Periodic variations of ion density in the Martian ionosphere during dust storms observed by MAVEN, The 24th Symposium on Planetary Sciences, P-09, Tohoku University, Sendai, 20 - 22 February 2023 (poster).
Yoshida, T., S. Aoki, Y. Ueno, N. Terada, Y. Nakamura, K. Shiobara, N. Yoshida, H. Nakagawa, S. Sakai, and S. Koyama, Photolysis-induced carbon isotopic fractionation of CO in the Martian atmosphere, The 24th Symposium on Planetary Sciences, 0220-PM11, Tohoku University, Sendai, 20 February 2023 (oral).
Nakamura, Y., F. Leblanc, N. Terada, S. Hiruba, I. Murata, H. Nakagawa, S. Sakai, S. Aoki, A. Piccialli, Y. Willame, L. Neary, A. C. Vandaele, K. Murase, and R. Kataoka, Variation of the atmospheric chemical composition induced by solar energetic particles on Mars, The 24th Symposium on Planetary Sciences, 0220-PM10, Tohoku University, Sendai, 20 February 2023 (oral).
Sakai, S., Current status and prospects of the Martian atmospheric escape study, The 24th Symposium on Planetary Sciences, 0220-PM8, Tohoku University, Sendai, 20 February 2023 (oral, Keynote lecture).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, S. Toriumi, and LAPYUTA Working Group, Feasible study of Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly (LAPYUTA) mission, The 24th Symposium on Planetary Sciences, 0220-PM3, Tohoku University, Sendai, 20 February 2023 (oral).
Seki, K., A. Nakayama, R. Sakata, T. Imamura, S. Sakai, N. Terada, K. Keika, K. France, and D. Brain, Study of plasmasphere formation at terrestrial exoplanets around M-Dwarf stars and its detectability, 152nd SGEPSS Fall Meeting, R009-26, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 7 November 2022 (oral).
Nishioka, T., K. Seki, R. Sakata, K. Yamamoto, S. Sakai, N. Terada, H. Shinagawa, and A. Nakayama, Effects of planetary intrinsic magnetic fields on the atmospheric ion escape from exoplanet TOI-700 d, 152nd SGEPSS Fall Meeting, R009-25, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 7 November 2022 (oral).
Sakai, S., N. Terada, K. Masunaga, H. Nakagawa, S. Yokota, and Y. Kasaba, Birthplace of energetic ions around the Phobos’ orbit at midnight: Implications for future MSA observations onboard MMX, 152nd SGEPSS Fall Meeting, R009-23, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 7 November 2022 (oral).
Sakata, R., K. Seki, S. Sakai, H. Shinagawa, and N. Terada, Multifluid MHD simulation of the effects of a dipole field on ion escape at ancient Mars, 152nd SGEPSS Fall Meeting, R009-22, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 7 November 2022 (oral).
Nakagawa, H., S. England, N. Yoshida, Y. Harada, S. Sakai, N. Terada, and K. Seki, Identifying atmospheric waves and solar wind impacts in the Martian atmosphere and ionosphere, 152nd SGEPSS Fall Meeting, R009-20, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 7 November 2022 (oral).
Masunaga, K., N. Terada, S. Sakai, S. Yokota, Y. Harada, T. Hara, and T. Usui, Variations of hot oxygen corona of Mars during a comet approach, 152nd SGEPSS Fall Meeting, R009-18, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 7 November 2022 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, and S. Toriumi, LAPYUTA(Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) mission, 152nd SGEPSS Fall Meeting, R009-14, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 7 November 2022 (oral).
Yasuda, R., T. Kimura, H. Misawa, F. Tsuchiya, S. Satoh, S. Sakai, A. Kumamoto, Y. Kasaba, B. Cecconi, C. Louis, and P. Zarka, Numerical radar simulation for the explorations of the ionospheres of Jupiter's icy moons, 152nd SGEPSS Fall Meeting, R009-12, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 6 November 2022 (oral).
Kasaba, Y., H. Kojima, S. Kurita, S. Yagitani, M. Ozaki, Y. Kasahara, S. Matsuda, F. Tsuchiya, H. Misawa, A. Kumamoto, T. Kimura, H. Kita, M. Kitahara, S. Sakai, R. Yasuda, Y. Miyoshi, BepiColombo PWI team, JUICE RPWI team, Mercury flybys of BepiColombo/Mio PWI and prelaunch of JUICE RPWI: Collaborations with Europe, 152nd SGEPSS Fall Meeting, R009-04, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 6 November 2022 (oral).
Satoh, S., F. Tsuchiya, S. Sakai, R. Yasuda, Y. Kasaba, and T. Kimura, A test particle simulation of Jovian magnetospheric electrons precipitating into Europa’s oxygen atmosphere, 152nd SGEPSS Fall Meeting, R009-P19, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 5 November 2022 (poster).
Kimura, T., C. Tao, G. Murakami, K. Yoshioka, F. Tsuchiya, A. Yamazaki, M. Kagitani, R. Koga, K. Masunaga, and S. Sakai, Scientific feasibility study for planetary auroral observations for the LAPYUTA mission, 152nd SGEPSS Fall Meeting, R009-P12, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 5 November 2022 (poster).
Osanai, T., K. Masunaga, N. Terada, S. Sakai, T. Hara, and N. Yoshida, Periodic variations of ion density in the Martian ionosphere during dust storms observed by MAVEN/STATIC, 152nd SGEPSS Fall Meeting, R009-P07, Sagamihara Sangyo Kaikan / Keyaki Kaikan, Sagamihara, 5 November 2022 (poster).
Masunaga, K., N. Terada, S. Sakai, S. Yokota, Y. Harada, T. Hara, and T. Usui, On delivery of cometary atmosphere to Mars, The Japanese Society for Planetary Sciences Fall Meeting, OI-03, The Hirosawa City Hall, Mito, Ibaraki, Japan, 22 September 2022 (oral).
Yoshida, T., S. Aoki, Y. Ueno, N. Terada, Y. Nakamura, K. Shiobara, N. Yoshida, H. Nakagawa, S. Sakai, and S. Koyama, Carbon isotope fractionation associated with photodissociation in the Martian atmosphere, The Japanese Society for Planetary Sciences Fall Meeting, OC-06, The Hirosawa City Hall, Mito, Ibaraki, Japan, 21 September 2022 (oral).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Multispecies MHD study of ion escape at ancient Mars: Effects of an intrinsic magnetic field and solar XUV radiation, The Japanese Society for Planetary Sciences Fall Meeting, SA-07, The Hirosawa City Hall, Mito, Ibaraki, Japan, 20 September 2022 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, S. Toriumi, and LAPYUTA WG, Review status of LAPYUTA Mission (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), The Japanese Society for Planetary Sciences Fall Meeting, PB-08, The Hirosawa City Hall, Mito, Ibaraki, Japan, 20 - 22 September 2022 (poster).
Tokushige, M., T. Kimura, E. Nakata, S. Sakai, and N. Terada, Comparison of nitrogen atmospheric escape between the ancient Earth and present Titan using the 3D global MHD simulation, Japan Geoscience Union Meeting 2022, PCG19-P09, Online / Makuhari Messe, Chiba, 27 May 2022 (onsite) / 29 May 2022 (online) (poster).
Osanai, K. Masunaga, S. Sakai, N. Terada, and T. Hara, Ion density variations in the Martian upper atmosphere during dust storms observed by MAVEN/STATIC, Japan Geoscience Union Meeting 2022, PCG19-P02, Online / Makuhari Messe, Chiba, 27 May 2022 (onsite) / 29 May 2022 (online) (poster).
Masunaga, K., S. Sakai, G. Murakami, F. Tsuchiya, A. Yamazaki, K. Yoshioka, T. Kimura, M. Kagitani, R. Koga, and LAPYUTA WG, Feasibility studies on Mars and Venus science for LAPYUTA, Japan Geoscience Union Meeting 2022, PCG19-P03, Online / Makuhari Messe, Chiba, 27 May 2022 (onsite) / 29 May 2022 (online) (poster).
Sakai, S., N. Terada, K. Masunaga, H. Nakagawa, S. Yokota, and Y. Kasaba, Exospheric retrieval from energetic ions for isotope ratio measurements by numerical simulations: Implications for future MSA observations onboard MMX, Japan Geoscience Union Meeting 2022, PCG19-01, Online / Makuhari Messe, Chiba, 27 May 2022 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, and S. Toriumi, LAPYUTA(Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) mission, Japan Geoscience Union Meeting 2022, U08-11, Online / Makuhari Messe, Chiba, Japan, 23 May 2022 (oral).
Sakata, R., K. Seki, S. Sakai, H. Shinagawa, and N. Terada, Simulations of ion escape at ancient Mars based on a new multifluid MHD model with the cubed sphere, Japan Geoscience Union Meeting 2022, PEM16-12, Online / Makuhari Messe, Chiba, Japan, 22 May 2022 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, S. Toriumi, and LAPYUTA WG, Review status of LAPYUTA Mission (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), 2022 Annual Spring Meeting of the Astronomical Society of Japan, Online, 4 March 2022.
Fujita, K., N. Terada, S. Sakai, K. Terada, and T. Yoshida, Evaluation of the capture scenario considering the orbital evolution of Phobos in the escaping atmosphere of early Mars, The 23rd Symposium on Planetary Sciences, P-06, Online, 9 February 2022 (poster).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Takashi, and Y. Ebihara, Enhanced ion escape rate during the CME-like IMF rotation under weak intrinsic magnetic field conditions on a Mars-like planet, The 23rd Symposium on Planetary Sciences, 0209-AM3, Online, 9 February 2022 (oral).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Roles of an intrinsic magnetic field and solar conditions in ion escape at Mars and its implications for habitability, The 23rd Symposium on Planetary Sciences, 0209-AM3, Online, 9 February 2022 (oral, Invited).
Nakamura, Y., N. Terada, L. Francois, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Impacts of solar energetic particles on planetary atmospheres: Auroral emissions and changes in atmospheric chemical composition, The 23rd Symposium on Planetary Sciences, 0209-AM2, Online, 9 February 2022 (oral, Invited).
Osanai, T., K. Masunaga, S. Sakai, N. Terada, and T. Hara, Ion density variation in the Martian upper atmosphere observed by MAVEN/STATIC during the dust storm, The 23rd Symposium on Planetary Sciences, P-23, Online, 8 February 2022 (poster).
Nakagawa, H., A. Yamazaki, T. Sakanoi, N. Takeyama, K. Enya, T. Ishibashi, T. Takashima, Y. Harada, T. Hara, S. Aoki, K. Masunaga, S. Sakai, A. Saito, Y. Hozumi, M. Fukizawa, Y. Nakamura, N. Terada, K. Seki, N. Schneider, S. Jain, and J. Deighan, Study on the development of aurora camera equipment for strategic international planning proposal in collaboration with Mars Ice Mapper, Space Science Symposium, P-058, Online, 6 - 7 January 2022 (poster).
Kimura, T., C. Tao, G. Murakami, K. Yoshioka, F. Tsuchiya, A. Yamazaki, M. Kagitani, R. Koga, K. Masunaga, S. Sakai, and LAPYUTA WG, Scientific feasibility study for the planetary aurora observed with the LAPYUTA telescope, Space Science Symposium, P-041, Online, 6 - 7 January 2022 (poster).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, S. Toriumi, and LAPYUTA WG, LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), Space Science Symposium,
Koga, R., F. Tsuchiya, G. Murakami, M. Kuwabara, S. Sakai, T. Kimura, K. Yoshioka, J. Kimura, S. Takagi, and LAPYUTA WG, Feasibility study of the water vapor plumes from icy moons observed with the LAPYUTA, Space Science Symposium, P-039, Online, 6 - 7 January 2022 (poster).
Masunaga, K., S. Sakai, G. Murakami, F. Tsuchiya, A. Yamazaki, K. Yoshioka, T. Kimura, M. Kagitani, R. Koga, and LAPYUTA WG, Expolaration of Mars and Venus upper atmospheres with LAPYUTA: A fesibility study, Space Science Symposium, P-036, Online, 6 - 7 January 2022 (poster).
Sakata, R., K. Seki, S. Sakai, H. Shinagawa, and N. Terada, A new global multifluid MHD model with the cubed sphere focusing on Martian ionosphere and magnetosphere, 150th SGEPSS Fall Meeting, R008-07, Online, 4 November 2021 (oral).
Nakagawa, H., N. Yoshida, S. Sakai, Y. Harada, K. Terada, N. Terada, H. Fujiwara, T. Imamura, and K. Seki, Relative importance of possible sources on density perturbations in the Martian thermosphere and ionosphere, 150th SGEPSS Fall Meeting, R005-38, Online, 2 November 2021 (oral).
Nakamura, Y., N. Terada, L. Francois, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Numerical prediction of changes in atmospheric compositions during SEP events at Mars, 150th SGEPSS Fall Meeting, R009-31, Online, 2 November 2021 (oral).
Hiruba, S., H. Nakagawa, Y. Nakamura, N. Terada, S. Sakai, I. Murata, and Y. Futaana, Influences of solar energetic particles on the Martian ozone, 150th SGEPSS Fall Meeting, R009-29, Online, 2 November 2021 (oral).
Sakai, S., N. Terada, K. Masunaga, H. Nakagawa, S. Yokota, and Y. Kasaba, Numerical experiments of exospheric retrieval for isotope ratio measurements by MSA onboard MMX, 150th SGEPSS Fall Meeting, R009-24, Online, 2 November 2021 (oral).
Masunaga, K., N. Terada, S. Sakai, S. Yokota, T. Usui, and MSA team, A technique for retrieving the Martian hot oxygen exosphere from O+ pickup ion measurements in the magnetosheath, 150th SGEPSS Fall Meeting, R009-21, Online, 1 November 2021 (oral).
Koga, R., F. Tsuchiya, G. Murakami, M. Kuwabara, S. Sakai, T. Kimura, K. Yoshioka, J. Kimura, and S. Takagi, Feasibility study of Earth-orbiting UV telescope required to detect the Europa plume signatures, 150th SGEPSS Fall Meeting, R009-16, Online, 1 November 2021 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, H. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, S. Toriumi, Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly (LAPYUTA) mission, 150th SGEPSS Fall Meeting, S001-11, Online, 1 November 2021 (oral).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Dependence of ion escape from ancient Mars on the intrinsic magnetic field strength, The Japanese Society for Planetary Sciences Fall Meeting, O13-05, Online, 18 September 2021 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, R. Koga, J. Kimura, N. Narita, S. Kameda, M. Ikoma, M. Ouchi, M. Tanaka, K. Masunaga, S. Sakai, C. Tao, M. Kuwabara, S. Toriumi, and LAPYUTA WG, LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) mission, The Japanese Society for Planetary Sciences Fall Meeting, P02-29, Online, 18 September 2021 (poster).
Hiruba, S., H. Nakagawa, Y. Nakamura, N. Terada, S. Sakai, I. Murata, and Y. Futaana, Influences of solar energetic particles on the Martian ozone, The Japanese Society for Planetary Sciences Fall Meeting, P02-23, Online, 18 September 2021 (poster).
Sakai, S., N. Terada, K. Masunaga, H. Nakagawa, S. Yokota, and Y. Kasaba, Numerical experiments of exospheric retrieval for isotope ratio measurements by MSA onboard MMX, The Japanese Society for Planetary Sciences Fall Meeting, O03-07, Online, 16 September 2021 (oral).
Masunaga, K., N. Terada, S. Sakai, S. Yokota, T. Usui, and MSA team, Establishing a retrieval method of Martian exospheric density profiles based on pickup ion measurements of MAVEN: A study for future MMX observations, The Japanese Society for Planetary Sciences Fall Meeting, O03-05, Online, 16 September 2021 (oral).
Fujita, K., N. Terada, S. Sakai, K. Terada, and T. Yoshida, Orbital evolution of Phobos in the early Martian expansion atmosphere after the dissipation of the solar nebula, The Japanese Society for Planetary Sciences Fall Meeting, P01-14, Online, 16 September 2021 (poster).
Nakagawa, H., N. Yoshida, K. Terada, N. Terada, Y. Harada, S. Sakai, I. Imamura, H. Fujiwara, and K. Seki, Annual variability in the thermospheric wave perturbations at Mars, Japan Geoscience Union Meeting 2021, PCG18-P12, Online, 3 June 2021 (poster).
Hiruba, S., Y. Nakamura, H. Nakagawa, N. Terada, S. Sakai, I. Murata, and Y. Futaana, Influences of solar energetic particles on the Martian ozone layer, Japan Geoscience Union Meeting 2021, PCG18-P10, Online, 3 June 2021 (poster).
Fujita, K., N. Terada, S. Sakai, and K. Terada, The orbital evolution of Phobos in the expanded atmosphere of early Mars under an intense solar EUV radiation, Japan Geoscience Union Meeting 2021, PPS06-11, Online, 3 June 2021 (oral).
Nakamura, Y., N. Terada, L. Francois, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, and K. Murase, Modeling diffuse auroral emissions at Mars: Contribution of precipitating protons and mirror effects of crustal fields, Japan Geoscience Union Meeting 2021, PCG18-08, Online, 3 June 2021 (oral).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Dependences of ion escape from Mars on the intrinsic magnetic field strength under CME-like solar conditions at 3.5 Ga, Japan Geoscience Union Meeting 2021, PCG18-06, Online, 3 June 2021 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Ion escape mechanism from a Mars-like planet under weak intrinsic magnetic field conditions: Dependence of IMF clock angle, Japan Geoscience Union Meeting 2021, PCG18-05, Online, 3 June 2021 (oral).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, M. Ouchi, M. Tanaka, N. Narita, S. Kameda, M. Ikoma, K. Masunaga, S. Sakai, C. Tao, R. Koga, M. Kuwabara, S. Toriumi, and LAPYUTA WG Study Team, Considerations of LAPYUTA Mission (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), Astronomical Society of Japan Spring Meeting 2021, V219a, Online, 16 March 2021 (oral).
Sakai, S., R. Sakata, K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Effects of an intrinsic magnetic field on atmospheric escape from a Mars-like planet, The 22nd Symposium on Planetary Sciences, 03-06, Online, 18 February 2021 (oral, invited paper).
Murakami, G., F. Tsuchiya, R. Koga, M. Kagitani, K. Yoshioka, A. Yamazaki, S. Sakai, J. Kimura, and LAPYUTA WG, Observation project of icy satellite plume with the LAPYUTA ultraviolet space telescope, The 22nd Symposium on Planetary Sciences, 02-06, Online, 18 February 2021 (oral, invited paper).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Effects of solar XUV and solar wind conditions on ion escape from ancient Mars, The 22nd Symposium on Planetary Sciences, P20, Online, 17 February 2021 (poster).
Yoshida, N., N. Terada, H. Nakagawa, D. A. Brain, S. Sakai, Y. Nakamura, Seasonal and dust related variations of dayside ionospheric compositions coupled with neutral upper atmosphere on Mars, The 22nd Symposium on Planetary Sciences, P18, Online, 17 February 2021 (poster).
Sakakura, K., K. Seki, S. Sakai, R. Sakata, H. Shinagawa, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, B. M. Jakosky, N. Terada, and T. Tanaka, Study of formation mechanisms of the molecular ion polar plume and its contribution to the ion escape from Mars, The 22nd Symposium on Planetary Sciences, P17, Online, 17 February 2021 (poster).
Mori, Y., K. Seki, S. Sakai, T. Hara, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, F. G. Eparvier, B. M. Jakosky, Study of proton escape from Mars based on observations by the MAVEN satellite, The 22nd Symposium on Planetary Sciences, P14, Online, 17 February 2021 (poster).
Hiruba, S., H. Nakagawa, Y. Nakamura, N. Terada, S. Sakai, and I. Murata, MAVEN/IUVS observations of the Martian ozone layer during solar energetic particle events, The 22nd Symposium on Planetary Sciences, P13, Online, 17 February 2021 (poster).
Nakamura, Y., N. Terada, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, K. Murase, and F. Leblanc, Modeling of SEP induced auroral emission at Mars: Contribution of precipitating protons and effects of crustal fields, The 22nd Symposium on Planetary Sciences, P12, Online, 17 February 2021 (poster).
Fujita, K., N. Terada, S. Sakai, and K. Terada, The orbital evolution of Phobos in the early Martian expanded atmosphere under high solar EUV radiation, The 22nd Symposium on Planetary Sciences, P03, Online, 17 February 2021 (poster).
Tsuchiya, F., G. Murakami, A. Yamazaki, T. Kimura, K. Yoshioka, M. Kagitani, M. Ouchi, M. Tanaka, N. Narita, S. Kameda, M. Ikoma, K. Masunaga, S. Sakai, C. Tao, R. Koga, M. Kuwabara, S. Toriumi, and LAPYUTA WG Study Team, Considerations of LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), Space Science Symposium, Online, 7 January 2021 (oral).
Fujita, K., N. Terada, S. Sakai, and K. Terada, The orbital evolution of Phobos in the early Martian expanded atmosphere under high solar EUV radiation, P-D2-A29, Online, 13 November 2020 (poster).
Sakakura, K., K. Seki, S. Sakai, R. Sakata, H. Shinagawa, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, B. M. Jakosky, N. Terada, and T. Tanaka, Molecular ion contribution to the polar plume from Mars and its dependence on solar wind parameters, 148th SGEPSS Fall Meeting, R009-34, Online, 2 November 2020 (oral).
Yoshida, N., N. Terada, H. Nakagawa, D. A. Brain, and S. Sakai, Seasonal variation of dayside ionospheric compositions coupled with neutral upper atmosphere on Mars, 148th SGEPSS Fall Meeting, R009-32, Online, 2 November 2020 (oral).
Mori, Y., K. Seki, S. Sakai, T. Hara, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, F. G. Eparvier, and B. M. Jakosky, Study of proton escape from Mars based on MAVEN observations, 148th SGEPSS Fall Meeting, R009-31, Online, 2 November 2020 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on atmospheric escape from Mars under weak intrinsic magnetic field conditions, 148th SGEPSS Fall Meeting, R009-30, Online, 2 November 2020 (ora;).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Dependence of ion escape from Mars on ancient solar XUV and solar wind conditions, 148th SGEPSS Fall Meeting, R009-29, Online, 2 November 2020 (oral).
Hiruba, S., H. Nakagawa, Y. Nakamura, S. Sakai, I. Murata, and N. Terada, MAVEN/IUVS observation of the Martian ozone layer during solar energetic particle events, 148th SGEPSS Fall Meeting, R009-24, Online, 2 November 2020 (oral).
Nakamura, Y., N. Terada, H. Nakagawa, S. Sakai, S. Hiruba, and F. Leblanc, Modeling of SEP induced auroral emission at Mars: Different behaviors of electron and proton in the presence of crustal fields, 148th SGEPSS Fall Meeting, R006-10, Online, 1 November 2020 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on atmospheric escape from a Mars-like planet under a weak intrinsic magnetic field condition, The 21st Symposium on Planetary Sciences, 04-05, Tohoku University, Sendai, 18 February 2020 (oral).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Study of ion escape mechanisms from ancient Mars with a focus on effects of the global intrinsic magnetic field, The 21st Symposium on Planetary Sciences, 04-02, Tohoku University, Sendai, 18 February 2020 (oral).
Keika, K., P. C. Brandt, D. G. Mitchell, R. C. Allen, C. Paranicas, M. Kusterer, D. C. Hamilton, and S. Sakai, Ion energization during reconnection-driven large-scale injections in Saturn's magnetotail: Cassini observations, The 21st Symposium on Planetary Sciences, P16, Tohoku University, Sendai, 17 February 2020 (poster).
Sakakura, K., K. Seki, S. Sakai, D. Brain, J. McFadden, J. Halekas, G. DiBraccio, and B. Jakosky, Study of molecular ion contribution to the polar plume from Mars based on MAVEN observations, The 21st Symposium on Planetary Sciences, P07, Tohoku University, Sendai, 17 February 2020 (poster).
Seki, K., Y. Mori, S. Sakai, T. Hara, J. McFadden, J. Halekas, D. Brain, G. DiBraccio, and B. Jakosky, Water escape mechanism from Mars: Trend and future of research, The 21st Symposium on Planetary Sciences, 02-06, Tohoku University, Sendai, 17 February 2020 (oral, invited paper).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on ion escape mechanism under a weak intrinsic magnetic field condition at Mars, 146th. SGEPSS Fall Meeting, R009-P20, Kumamoto City International Center, Kumamoto, 24 October 2019 (poster). [Abstract]
Keika, K., P. C. Brandt, D. G. Mitchell, and S. Sakai, Proton-oxygen differenes in energy spectral evolution during large-scale injections in Saturn's magnetosphere, 146th SGEPSS Fall Meeting, R009-P11, Kumamoto City International Center, Kumamoto, 24 October 2019 (poster). [Abstract]
Mori, Y., K. Seki, S. Sakai, T. Hara, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, F. G. Eparvier, and B. M. Jakosky, Study of proton escape from Mars based on MAVEN observations, 146th. SGEPSS Fall Meeting, R009-12, Kumamoto City International Center, Kumamoto, 23 October 2019 (oral). [Abstract]
Sakakura, K., K. Seki, S. Sakai, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, and B. M. Jakosky, Study of ion composition in the polar plume from Mars based on MAVEN observations, 146th. SGEPSS Fall Meeting, R009-11, Kumamoto City International Center, Kumamoto, 23 October 2019 (oral). [Abstract]
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Effects of the intrinsic magnetic field on the ion loss from Mars at 3.5 Ga and 4.5 Ga, 146th. SGEPSS Fall Meeting, R009-10, Kumamoto City International Center, Kumamoto, 23 October 2019 (oral). [Abstract]
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, abd Y. Ebihara, Effects of a weak intrinsic magnetic field on atmospheric escape from Mars, The Japanese Society for Planetary Sciences Fall Meeting, O51, Kyoto Sangyo University, Kyoto, 9 October 2019 (oral).
Seki, K., Y. Mori, K. Sakakura, S. Sakai, D. A. Brain, J. P. McFadden, T. Hara, D. Mitchell, J. S. Halekas, G. A. DiBraciio, and B. M. Jakosky, Study on mass dependence of the ion escape from Mars based on MAVEN observations, The Japanese Society for Planetary Sciences Fall Meeting, P60, Kyoto Sangyo Univeristy, Kyoto, 7 October 2019 (poster).
Sakakura, K., K. Seki, S. Sakai, D. A. Brain, J. P. McFadden, J. S. Halekas, G. A. DiBraccio, and B. M. Jakosky, Study of ion composition in the polar plume from Mars based on MAVEN observations, Japan Geoscience Union Meeting 2019, PCG25-P04, Makuhari Messe, Chiba, 28 May 2019 (poster). [Abstract]
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, T. and Tanaka, Effects of the intrinsic magnetic field on the ion loss from ancient Mars, Japan Geoscience Union Meeting 2019, PCG25-11, Makuhari Messe, Chiba, 28 May 2019 (oral). [Abstract]
Seki, K., S. Sakai, S. Inui, R. Sakata, N. Terada, H. Shinagawa, D. A. Brain, Effects of the intrinsic magnetic field on the atmospheric escape from terrestrial planets, Japan Geoscience Union Meeting 2019, SEM18-13, Makuhari Messe, Chiba, 26 May 2019 (oral, invited paper). [Abstract]
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, A simulation study on effects of a weak intrinsic magnetic field on atmosheric escape from Mars, 393th. Sustainable Humanosphere Symposium: RISH Mission Symposium, Kyoto University, Uji, Kyoto, 25 February 2019 (oral, invited paper).
Sakai, S., T. E. Cravens, L. Andersson, C. M. Fowler, D. L. Mitchell, C. Mazelle, D. A. Brain, E. M. B. Thiemann, F. G. Eparvier, and K. Seki, Low electron temperatures observed at Mars by MAVEN on dayside crustal magnetic field lines, 144th. SGEPSS Fall Meeting, R009-13, Nagoya University, Nagoya, 26 November 2018 (oral). [Abstract]
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Effects of a weak planetary intrinsic magnetic field on the ion loss from ancient Mars, 144th. SGEPSS Fall Meeting, R009-11, Nagoya University, Nagoya, 26 November 2018 (oral). [Abstract]
Inui, S., K. Seki, S. Sakai, D. A. Brain, T. Hara, J. P. McFadden, J. S. Halekas, D. L. Mitchell, G. A. DiBraccio, and B. M. Jakosky, Statistical study of heavy ion outflows from Mars observed in the Martian induced magnetotail by MAVEN, 144th. SGEPSS Fall Meeting, R009-10, Nagoya University, Nagoya, 26 November 2018 (oral). [Abstract]
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on Martian atmospheric escape under a weak intrinsic magnetic field, 144th. SGEPSS Fall Meeting, R009-P11, Nagoya University, Nagoya, 25 November 2018 (poster). [Abstract]
Seki, K., S. Sakai, S. Inui, R. Sakata, N. Terada, S. Shinagawa, D. A. Brain. J. P. McFadden, T. Hara, D. Mitchell, J. S. Halekas, G. A. DiBraccio, and B. M. Jakosky, Study of ion escape mechanisms from Mars based on MAVEN observations and multi-species MHD simulations, The Japanese Society for Planetary Sciences Fall Meeting 2018, P01, Asahikawa Science Museum, Asahikawa, Hokkaido, 17 October 2018 (poster).
Seki, K., A. Yamazaki, N. Terada, A. Matsuoka, H. Nakagawa, S. Yokota, S. Kasahara, Y. Saito, T. Sakanoi, T. Imamura, Y. Kasaba, K. Enya, Y. Futaana, A. Kumamoto, T. Usui, H. Maesawa, Y. Kasai, H. Sagawa, M. Taguchi, Y. Miyoshi, T. Hara, T. Kuroda, S. Sakai, K. Fujita, S. Sasaki, and MSWC team, Mission plan for exploration of the space weather and climate at Mars, Meeting on observations of the Earth's upper atmosphere from space, National Institute of Information and Communications Technology, Koganei, Tokyo, 12 September 2018 (oral).
Seki, K., A. Yamazaki, N. Terada, A. Matsuoka, H. Nakagawa, S. Yokota, S. Kasahara, Y. Saito, T. Sakanoi, T. Imamura, Y. Kasaba, K. Enya, Y. Futaana, A. Kumamoto, T. Usui, H. Maesawa, Y. Kasai, H. Sagawa, M. Taguchi, Y. Miyoshi, T. Hara, T. Kuroda, S. Sakai, K. Fujita, S. Sasaki, and MSWC team, Mission plan for exploration of the space weather and climate at Mars, Japan Geoscience Union Meeting 2018, U08-P02, Makuhari Messe, Chiba, 21 May 2018 (poster). [Abstract]
Sakata, R., S. Sakai, K. Seki, N. Terada, H. Shinagawa, and T. Tanaka, Effects of a planetary intrinsic magnetic field on the ion loss mechanism of ancient Mars, Japan Geoscience Union Meeting 2018, PCG23-P03, Makuhari Messe, Chiba, 20 May 2018 (poster). [Abstract]
Inui, S., K. Seki, S. Sakai, D. A. Brain, J. P. McFadden, T. Hara, J. S. Halekas, D. L. Mitchell, G. A. DiBraccio, and B. M. Jakosky, Statistical study of heavy ion outflows from Mars observed by MAVEN, Japan Geoscience Union Meeting 2018, PCG23-09, Makuhari Messe, Chiba, 20 May 2018 (oral). [Abstract]
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Effects of an intrinsic magnetic field on the ion escape from Mars, Japan Geoscience Union Meeting 2018, PCG23-08, Makuhari Messe, Chiba, 20 May 2018 (oral). [Abstract]
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Effects of a weak intrinsic magnetic field on the atmospheric escape from Mars, Symposium on Planetary Science 2018, P22, Tohoku University, Sendai, 28 Februrary 2018 (poster).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, The ion escape from Mars with a weak intrinsic magnetic field, 142nd. SGEPSS Fall Meeting, R009-17, Kyoto University, Uji, Kyoto, Japan, 18 October 2017 (oral). [Abstract]
Inui, S., K. Seki, S. Sakai, K. Matsunaga, D. A. Brain, J. P. McFadden, T. Hara, J. S. Halekas, D. L. Mitchell, J. E. P. Connerney, and B. M. Jakosky, Effect of the crustal magnetic fields and solar wind electric fields on heavy ion outflows from Mars observed by MAVEN, 142nd. SGEPSS Fall Meeting, R009-16, Kyoto University, Uji, Kyoto, Japan, 18 October 2017 (oral). [Abstract]
Sakai, S., T. E. Cravens, N. Omidi, M. E. Perry, and J. H. Waite Jr., Ion energy distributions and densities in the plume of Enceladus, Meeting of heavy ions in the solar system, Osaka Electro-Communication University, Osaka, Japan, 9 March 2017 (oral, invited paper).
Sakai, S., N. Terada, K. Seki, T. Amano, Y. Ebihara, K. Keika, Y. Matsumoto, H. Nakagawa, and Y. Ogawa, The Martian MHD modeling: Preliminary results of comparisons between ancient and present plasma environment, Symposium on Planetary Science 2017, Tohoku University, Sendai, Japan, 21 February 2017 (poster).
Sakai, S., T. E. Cravens, L. A. Andersson, C. M. Fowler, E. M. B. Thiemann, F. G. Eparvier, S. W. Bougher, M. Benna, A. Rahmati, N. L. Reedy, and B. M. Jakosky, MAVEN observations of electron temperatures in the dayside ionosphere at Mars and model comparisons, Meeting of the terrestrial-planet environment, Rikkyo University, Tokyo, Japan, 28 December 2016 (oral).
Sakai, S., L. Andersson, T. E. Cravens, D. L. Mitchell, C. Mazelle, A. Rahmati, C. M. Fowler, S. W. Bougher, E. M. B. Thiemann, F. G. Eparvier, J. M. Fontenla, P. R. Mahaffy, J. E. P. Connerney, and B. M. Jakosky, Electron energetics in the Martian dayside ionosphere: Model comparisons with MAVEN data, 140th. SGEPSS Fall Meeting, R009-05, Kyushu University, Fukuoka, Japan, 21 November 2016 (oral). [Abstract]
Sakai, S., and S. Watanabe, Plasma dynamics in Saturn's middle-latitude ionosphere and implications for magnetosphere-ionosphere coupling, 138th. SGEPSS Fall Meeting, R009-10, University of Tokyo, Tokyo, Japan, 1 November 2015 (oral). [Abstract]
Sakai, S., and S. Watanabe, Dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling, PCG38-22, JpGU Meeting 2014, Pacifico Yokohama, Yokohama, Japan, 1 May 2014 (oral). [Abstract]
Sakai, S., M. Morooka, J. -E. Wahlund, and S. Watanabe, Height dependences of Enceladus plume observed by Cassini RPWS/LP, 134th. SGEPSS Fall Meeting, R011-04, Kochi University, Kochi, Japan, 4 November 2013 (oral). [Abstract]
Sakai, S., and S. Watanabe, Plasma density and temperature in Saturn's ionophere, JpGU Meeting 2013, PCG31-20, Makuhari Messe, Chiba, Japan, 23 May 2013 (oral). [Abstract]
Sakai, S., and S. Watanabe, Ion speeds estimated from ionospheric plasma density and magnetospheric dust density in Saturn's E ring, 132nd. SGEPSS Fall Meeting, B009-08, Sapporo Convention Center, Sapporo, Japan, 22 October 2012 (oral). [Abstract]
Sugiyama, K, A. Suzuki, T. Nakamura, S. Manabe, S. Sakai, R. Tsurumaki, S. Tatsumi, R. Nakaoka, N. Katoh, I. Tani, T. Umemoto, T. Oshikawa, and Center for Planetary Science, A repository for knowledge of planetary science serving by Center for Planetary Science (CPS), JpGU Meeting 2012, PPS21-P10, Makuhari Messe, Chiba, Japan, 22 May 2012 (poster). [Abstract]
Murakami, M., M. -Y. Yamamoto, S. Watanabe, Y. Kakinami, S. Sakai, and M. Larsen, Observation of resonance scattering light of Lithium vapor in daytime lower thermosphere, 130th. SGEPSS Fall Meeting, B005-P016, Kobe University, Kobe, Japan, 5 November 2011 (poster). [Abstract]
Nakaoka, K., S. Watanabe, and S. Sakai, An ion composition model of Titan's upper atmosphere, 130th. SGEPSS Fall Meeting, B009-08, Kobe University, Kobe, Japan, 4 November 2011 (oral). [Abstract]
Sakai, S., S. Watanabe, M. Morooka, and J. -E. Wahlund, The ion observations from Cassini RPWS/LP around Enceladus' orbit, 130th. SGEPSS Fall Meeting, B011-P003, Kobe University, Kobe, Japan, 4 November 2011 (poster). [Abstract]
Nakaoka, K., S. Watanabe, and S. Sakai, A modeling of Titan's ionosphere, JpGU Meeting 2011, PCG033-P01, Makuhari Messe, Chiba, Japan, 24 May 2011 (poster). [Abstract]
Sakai, S., S. Watanabe, M. Morooka, and J. -E. Wahlund, A dust-plasma interaction in Saturn's E-ring, 128th. SGEPSS Fall Meeting, B009-24, Okinawa Municipality Community Hall, Okinawa, Japan, 3 November 2010 (oral). [Abstract]
Sakai, S., S. Watanabe, M. Morooka, and J. -E. Wahlund, Cassini ion observation and modeling of the Saturnian inner magnetosphere, JpGU Meeting 2010, PCG040-P13, Makuhari Messe, Chiba, Japan, 27 May 2010 (poster). [Abstract]
Morooka, M., J. -E. Wahlund, M. Shafiq, W. M. Farrell, D. A. Gurnett, W. S. Kurth, A. M. Persoon, M. André, M. Holmberg, S. Sakai, and S. Watanabe, Dusty Plasma near the E-ring and the Enceladus in Saturn's magnetosphere, JpGU Meeting 2010, PEM031-12, Makuhari Messe, Chiba, Japan, 24 May 2010 (oral, invited paper). [Abstract]
Sakai, S., S. Watanabe, M. Morooka, M. Holmberg, and J. -E. Wahlund, Ion velocity map of Saturn's inner magnetosphere, 126th. SGEPSS Fall Meeting, B009-07, Kanazawa University, Ishikawa, Japan, 27 September 2009 (oral). [Abstract]

Presentations in Other Meetings

International

Sakai, S., N. Terada, K. Masunaga, Y. Katoh, H. Nakagawa, S. Yokota, and Y. Kasaba, Birthplace of energetic ions around the Phobos' orbit at midnight: Implications for future Japanese MMX mission, MAVEN PSG Meeting, Boston University, Brookline, MA, USA, 18 October 2022 (oral).
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Effects of an intrinsic magnetic field on the ion loss from ancient Mars, ISEE International Workshop on relations between solar evolution and atmospheric escape from terrestrial planets, Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan, 27 March 2019 (oral).
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, and Y. Ebihara, Effects of the IMF direction on atmospheric escape under a weak intrinsic magnetic field at Mars, ISEE International Workshop on relations between solar evolution and atmospheric escape from terrestrial planets, Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan, 26 March 2019 (oral).
Seki, S., S. Sakai, S. Inui, R. Sakata, N. Terada, H. Shinagawa, D. A. Brain, J. P. McFadden, T. Hara, D. Mitchell, J. S. Halekas, G. A. DiBraccio, and B. M. Jakosky, Effects of intrinsic magnetic fields on atmospheric escape from Mars, ISEE International Workshop on relations between solar evolution and atmospheric escape from terrestrial planets, Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan, 26 March 2019 (oral).
Sakai, S., R. Sakata, K. Seki, N. Terada, H. Shinagawa, T. Tanaka, and Y. Ebihara, Atmospheric escape from Mars associated with variations of the intrinsic magnetic field and solar activity, MAVEN PSG Meeting, University of Colorado Boulder, Boulder, Colorado, USA, 15 March 2018 (poster).
Inui, S., K. Seki, S. Sakai, D. A. Brain, J. P. McFadden, T. Hara, J. S. Halekas, D. L. Mitchell, G. A. DiBraccio, and B. M. Jakosky, A statistical study of relative contribution of O+, O2+ and CO2+ to heavy ion outflows from Mars, MAVEN PSG Meeting, University of Colorado Boluder, Boulder, Colorado, USA, 14 March 2018 (poster).
Sakai, S., K. Seki, N. Terada, H. Nakagawa, S. Inui, T. Kuroda, A. Medvedev, K. Terada, L. Andersson, M. Benna, D. A. Brain, J. E. P. Connerney, T. E. Cravens, F. G. Eparvier, J. R. Espley, C. M. Fowler, J. S. Halekas, S. K. Jain, T. Hara, D. E. Larson, R. J. Lillis, J. G. Luhmann, P. R. Mahaffy, C. Mazelle, J. P. McFadden. D. L. Mitchell, A. Rahmati, N. L. Reedy, N. M. Schneider, E. M. B. Thiemann, B. M. Jakosky, and MAVEN PS Team, Report of MAVEN research from Japan, MAVEN PSG Meeting, University of Arizona, Tucson, Arizona, USA, 11 October 2017 (poster).
Sakai, S., T. E. Cravens, L. Andersson, C. M. Fowler, D. L. Mitchell, C. Mazelle, A. Rahmati, N. Reedy et al., Ionospheric electron temperature in the crustal and non-crustal region (preliminary results), MAVEN PSG Meeting, Boston University, Boston, Massachusetts, USA, 16 June 2016 (oral).
Sakai, S., T. E. Cravens, N. Omidi, M. E. Perry, and J. H. Waite Jr., Ion energy distributions and densities in the plume of Enceladus, Cassini CAPS/INMS Joint Meeting, Institut de Planétologie et d'Astrophysique de Grenoble, Grenoble, France, 3 March 2016 (oral).
Cravens, T. E., S. Sakai, and L. Andersson, Different between model T_e and measured T_e and effects on O₂⁺ recombination, MAVEN PSG Meeting, University of Colorado Boulder, Boulder, Colorado, USA, 4 Februrary 2016 (oral).
Sakai, S., T. E. Cravens, A. Rahmati, L. Andersson, D. L. Mitchell, S. W. Bougher, F. G. Eparvier, J. M. Fontenla, J. E. P. Connerney, P. R. Mahaffy, C. Mazelle, and B. M. Jakosky, Electron energetics in the dayside ionosphere: Model comparison with MAVEN data, MAVEN PSG Meeting, University of Colorado Boulder, Boulder, Colorado, USA, 3 and 4 Februrary 2016 (oral).
Sakai, S., A. Evans, and T. E. Cravens, Magnetosphere-ionosphere-ring coupling at Saturn, ISSI International Team Meeting of "Coordinated numerical modelling of the global Jovian and Saturnian systems", Internatioal Space Science Institute, Bern, Switzerland, 5 January 2016 (oral).
Sakai, S., and S. Watanabe, Update: Inner magnetosphere-ionosphere coupling at Saturn, ISSI International Team Meeting of "Coordinated numerical modelling of the global Jovian and Saturnian systems", Internatioal Space Science Institute, Bern, Switzerland, 5 January 2016 (oral).
Sakai, S., A. Rahmati, T. E. Cravens, D. L. Mitchell, S. W. Bougher, C. Mazelle, F. G. Eparvier, J. M. Fontenla, L. Andersson, and J. E. P. Connerney, Model comparisons of photoelectrons and plasma temperatures with MAVEN observations, MAVEN PSG Meeting, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA, 29 October 2015 (oral).
Peterson, W. K., E. Thiemann, F. Epavier, L. Andersson, C. Fowler, S. Jain, D. Mitchell, J. Fontenla, S. Evans, S. Xu, M. Liemohn, S. Sakai, T. Cravens, and C. Mazelle, Solar ionizing radiation at Mars: Predictions vs. Observations II, MAVEN PSG Meeting, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA, 29 October 2015 (oral).
Sakai, S., A. Rahmati, D. L. Mitchell, T. E. Cravens, S. W. Bougher, C. Mazelle, W. K. Peterson, F. G. Eparvier, and J. M. Fontenla, Models insights into energetic photoelectrons measured by MAVEN, MAVEN PSG Meeting, University of Colorado Boulder, Boulder, Colorado, USA, 24 June 2015 (oral).
Peterson, W. K., E. Thiemann, L. Andersson, D. Larson, D. Mitchell, J. Fontenla, S. Evans, S. Xu, M. Liemohn, S. Sakai, and T. Cravens, Solar ionizing radiation at Mars: Predictions vs. Observations, MAVEN PSG Meeting, University of Colorado Boulder, Boulder, Colorado, USA, 24 June 2015 (oral).
Cravens, T. E., A. Rahmati, S. Sakai, D. Mitchell, J. Connerney, J. Halekas et al., Energetic suprathermal electrons in the ionosphere of Mars, MAVEN PSG Meeting, University of California Berkeley Space Science Laboratory, Berkeley, California, USA, 5 March 2015 (oral).
Sakai, S., Satrun's inner magnetosphere-ionosphere coupling and the relationship with dust-plasma interaction, ISSI International Team Meeting of "Coordinated numerical modelling of the global Jovian and Saturnian systems", Internatioal Space Science Institute, Bern, Switzerland, 7 January 2015 (oral).
Sakai, S., and S. Watanabe, M-I coupling in Saturn's E ring, Cassini INMS Meeting, The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, USA, 15 October 2014 (oral).
Sakai, S., T. E. Cravens, S. Pothapragada, and A. Kumar, Enceladus plume model, Cassini INMS Meeting, The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, USA, 14 October 2014 (oral).
Sakai, S., M. Morooka, J. -E. Wahlund, and S. Watanabe, Dust and plasma characteristics of the Enceladus plume, Dust Workshop/Cassini PSG Meeting #60, Uppsala Konsert & Kongress, Uppsala, Sweden, 28 June 2013 (oral).
Sakai, S., M. Morooka, J. -E. Wahlund, and S. Watanabe, Dust and plasma characteristics of the Enceladus plume, RPWS Team Meeting/Cassini PSG Meeting #60, Ångström Laboratory, Uppsala, Sweden, 24 June 2013 (oral).
Sakai, S., S. Watanabe, M. W. Morooka, M. K. G. Holmberg, J. -E. Wahlund, D. A. Gurnett and W. S. Kurth, Dust-plasma interaction through magnetosphere-ionosphere coupling in Saturn's plasma disk, Cassini/Saturn Local Meeting, Tohoku University, Sendai, Japan, 21 November 2012 (oral).

Japanese

Koga, R., F. Tsuchiya, G. Murakami, and S. Sakai, Considerations for the detection of icy satellite plumes, LAPYUTA Kickoff Meeting, Online, 13 January 2020 (oral).
Sakai, S., and S. Watanabe, Dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling, Joint seminar of DCs and PDs on solar-terrestrial and planetary sciences, Tohoku University, Sendai, Japan, 19 Februrary 2014 (oral).
Sakai, S., S. Watanabe, M. Morooka, M. Holmberg, J. Wahlund, and R. Fujii, Slowing ion by the dust-plasma interaction and magnetosphere-ionosphere coupling in Saturn's inner magnetosphere, Joint seminar of DCs and PDs on solar-terrestrial and planetary sciences, Tohoku University, Sendai, Japan, 2 April 2012 (oral).

Dissertation

Studies on dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling (pdf): Doctoral thesis, Hokkaido University, March 2014.
Cassini RPWS/LP observation of ion velocity and modeling of Saturn's inner magnetosphere (pdf, in Japanese): Master thesis, Hokkaido University, March 2011.
Study on a generation mechanism of Saturnian aurora (pdf, in Japanese): Graduation thesis, Hokkaido University, March 2009.

Presentations in Seminars

PAT Seminar at Tohoku U. (2023/12/15): C+ emission processes in the Martian upper atmosphere ~Preliminary results from MAVEN IUVS observations and feasibility study of UV observations for the future LAPYUTA mission~
Kimura-lab Seminar at TUS (2023/12/11): Effects of stellar XUV spectra on atmospheric escape from a Mars-like planet orbiting inactive low-mass stars
GP-EES Interdisciplinary Seminar at Tohoku U. (2023/07/21): Martian Exploration: Past, Present, and Future Perspectives
PAT Seminar at Tohoku U. (2023/06/30): Can we observe the plasma cloud from the ionosphere at Venus and Mars with LAPYUTA? ~Very preliminary results of the feasibility study on the C+ observation~
Mars Study Group (2023/03/22): Review of Amdrews et al. (2023). Electron densities and temperatures in the Martian ionosphere: MAVEN LPW observations of control by crustal fields, J. Geophys. Res. Planets, 128, e2022JA031027, doi:10.1029/2023JA031027.
PAT Seminar at Tohoku U. (2022/11/25): Influence of stellar spectra on the evolution of planetary atmosphere ~Preliminary results from the multi species MHD simulation~
SSE Lunch Seminar (2022/06/15): Atmospheric escape processes from planets: A role of an intrinsic magnetic field
PAT Seminar at Tohoku U. (2022/06/10): Birthplace of energetic ions around Phobos orbit at midnight by numerical simulations: Implications for future MSA observations onboard MMX
PAT Seminar at Tohoku U. (2021/10/29): Effects of the planetary magnetic field on atmospheric escape
Mars Study Group (2021/5/26): Review of Mittelholtz et al. (2020). The origin of observed magnetic variability for a sol on Mars from InSight, J. Geophys. Res. Planets, 125, e2020JE006505, doi:10.1029/2020JE006505.
PAT Seminar at Tohoku U. (2021/05/14): The source of ions around the Phobos' orbit estimated from test particle simulations for future MMX observations
PAT Seminar at Tohoku U. (2020/11/27): Electron temperatures in the Martian ionosphere
PAT Seminar at Tohoku U. (2020/05/01): Effects of the IMF direction on atmospheric escape from a Mars-like planet under a weak intrinsic magnetic field conditions
Special Seminar at Tohoku U. (2020/02/05): Atmospheric escape from the upper atmosphere at Mars
Seki-group Seminar at U. Tokyo (2019/12/03): Effects of the IMF direction on atmospheric escape from a Mars-like planet under a weak intrinsic magnetic field condition
Mars Study Group (2019/11/11): Review of Xu et al. (2018). Observations and modeling of the Mars low-altitude ionospheric response to the 10 September 2017 X-Class solar flare. Geophys. Res. Lett., 45, 7382-7390, doi:10.1029/2018GL078524.
Mars Study Group (2019/11/11): Review of Thiemann et al. (2018). The Mars topside ionosphere response to the X8.2 solar flare of 10 September 2017, Geophys. Res. Lett., 45, 8005-8013, doi:10.1029/2018GL077730.
Seki-group Seminar at U. Tokyo (2019/06/11): Recent research about the Cassini Grand Finale Mission -One of the topics in the MOP conference-
STP Colloquium at U. Tokyo (2019/05/10): Effects of the IMF direction on atmospheric escape umder a weak intrinsic magnetic field at Mars
Mars Study Group (2019/03/13): Review of Cohen et al. (2015). The interaction of Venus-like, M-dwarf planets with the stellar wind of their host star, Ap. J., 806:41, doi:10.1088/0004-637X/806/1/41.
Seki-group Seminar at U. Tokyo (2019/02/12): Effects of the IMF direction on Martian atmospheric escape under a weak intrinsic magnetic field
STP Colloquium at U. Tokyo (2018/11/02): Low electron temperatures observed at Mars by MAVEN on dayside crustal magnetic field lines
Seki-group Seminar at U. Tokyo (2018/06/19): Low electron temperature observed at Mars by MAVEN in the dayside crustal magnetic field
STP Colloquium at U. Tokyo (2018/01/12): Effects of a weak intrinsic magnetic field on the atmospheric escape from Mars
Seki-group Seminar at U. Tokyo (2017/11/27): Ion escape of Mars with a weak intrinsic magnetic field
Seki-group Seminar at U. Tokyo (2017/04/18): Effects of a weak intrinsic magnetic field on the Martian plasma environments based on global multi-species MHD simulations
STP Colloquium at U. Tokyo (2017/01/31): Plasma environment in the plume of Enceladus
Seki-group Seminar at U. Tokyo (2016/10/11): MAVEN observations of electron temperature in the dayside ionosphere at Mars (and model comparisons)
Space Physics Seminar at KU (2016/06/02): Model insights into energetics photoelectrons measured by MAVEN
Space Physics Seminar at KU (2016/05/26): Ion energy distributions and densities in the plume of Enceladus
Astrophysics/Space Physics Seminar at KU (2016/04/05): Electron energetics in the Martian dayside ionosphere: Model comparisons with MAVEN data
Mars Study Group (2015/12/23): Review of Sakai et al., 2015, Model insights into energetic photoelectrons measured at Mars by MAVEN, Geophys. Res. Lett., 42, doi:10.1002/2015GL065169.
Mars Study Group (2015/12/23): Review of Rahmati et al., 2015, MAVEN insights into oxygen pickup ions at Mars, Geophys. Res. Lett., 42, doi:10.1002/2015GL065262.
Colloquium of the comparative planetology at Hokkaido Univ. (2015/07/09): Model insights into energetic photoelectrons measured at Mars by MAVEN
Astrophysics/Space Physics Seminar at KU (2015/02/24): Ion energy distribution and density in the Enceladus plume
Space Physics Seminar (2014/07/16): Langmuir Probe
Space Physics Seminar (2014/07/02): Dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling
Exploration and Observation Unit seminar (2014/05/16): Dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling
Defense for doctoral thesis (2014/02/04): Studies on dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling
Pre-exnamination for doctoral thesis (2013/12/16): Studies on dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling
Exploration and Observation Unit seminar (2013/12/03): Studies on dust-plasma interaction in Saturn's inner magnetosphere and its magnetosphere-ionosphere coupling
EPnetFaN (2013/10/04): Remote lecture between university and high school
Exploration and Observation Unit seminar (2013/07/31): Height dependences of Enceladus plume
IRFU Seminar (2013/02/20): Plasma and dust characteristics of the Enceladus plume (need password)
IRFU Seminar (2013/02/20): Dust-plasma interaction through magnetosphere-ionosphere coupling in Saturn's plasma disk
EPnetFaN (2012/12/14): EP network and router
Exploration and Observation Unit seminar (2012/11/13): Vertical structure and plasma characteristics of the Enceladus plume ~Analysis results of Cassini RPWS/LP~ (need password)
Summer School for Young Scientist Group of Geomagnetism, Earth, Planets, and Space Sciences (2012/09/03-05):
Ion modeling in Saturn's ionosphere and magnetosphere[Same field (need password)][Different field (need password)]
Exploration and Observation Unit seminar (2012/05/31): Slowing ion by dusty plasma and ionosphere in Saturn's inner magnetosphere
Exploration and Observation Unit seminar (2012/03/05): Slowing ion by dust-plasma interaction and magnetosphere-ionosphere coupling in Saturn's plasma disk
Summer School for Young Scientist Group of Geomagnetism, Earth, Planets, and Space Sciences (2011/09/12-14):
Dust-plasma interaction in Saturn's plasma disk
Exploration and Observation Unit seminar (2011/08/02): Dust-plasma interaction in Saturn's plasma disk (need password)
Information Experiment (6th.) (2011/06/10): The exposition of hardwares and taking apart a PC
Information Experiment (4th.) (2011/05/13): Shell, Shell script, vi
MOSIR Meeting (2011/04/13): Remote lecture between university and high school
Hearing of Master thesis (2011/02/10): Cassini RPWS/LP observation of ion velocity and modeling of Saturn's inner magnetosphere
EPnetFaN (2010/11/05): Remote class between university and high school
Exploration and Observation Unit seminar (2010/10/27): A dust-plasma interaction in Saturn's E-ring (only members of our group)
Muroran-Sakae Highschool Hokudai Visit (2010/08/12): What is University !?
Information Experiment (10th.) (2010/07/02): Network Computing
Exploration and Observation Unit seminar (2010/06/09): Ion modeling in the Saturnian inner magnetosphere (only members of our group)
Information Experiment (3rd.) (2010/04/30): Introduction to Linux
EPnetFaN (2010/03/26): nano
Rikubetsu training (2010/03/20-21): Mysterious planet "Saturn"
DM semi (2010/02/18): Cassini ion observation and modeling of the Saturnian inner magnetosphere
EPnetFaN (2009/10/23): REAL Server Forever...
Summer School for Young Scientist Group of Geomagnetism, Earth, Planets, and Space Sciences (2009/09/07-09):
Effects of Enceladus on Saturnian inner magnetosphere
EPnetFaN (2009/07/24): Activity Reports! Science Festival! EPnetFaN! ~Fliming of lecture as MOSIR~
DM semi (2009/05/14): Particle environment vicinity of Enceladus and E-ring
EPnetFaN (2009/05/08): MOSIR Project
Workshop for graduation 2 (2009/02/02): Study on a generation mechanism of Saturnian aurora
Workshop for graduation 1 (2008/09/26): Sturcture of Saturnian magnetosphere
EPnetFaN (2008/09/05): How do you like "SNS" ?
Remote teaching (2007/11/16, 12/07): Luna Sciences (2) The Luna Orbiter KAGUYA (SELENE);
Hashima-Kita High School, Ohgaki-Higashi High School

Last Update 26 February 2024