Study of energy and material transportations in the Jovian magnetosphere based on the database of US and Japanese satellites

• Project/Area Number: 17H02965
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Space and upper atmospheric physics
• Research Institution: The University of Tokyo
• Principal Investigator: Yoshikawa Ichiro 東京大学, 大学院新領域創成科学研究科, 教授 (10311169)
• Co-Investigator(Kenkyū-buntansha): 藤本 正樹 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (30242811) ; 土屋 史紀 東北大学, 理学研究科, 助教 (10302077)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2018: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000); Fiscal Year 2017: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
• Keywords: 惑星探査 / 外惑星 / オーロラ / 磁気圏 / プラズマ / 衛星大気 / 衛星イオ / 木星 / 外惑星磁気圏 / イオプラズマトーラス / 極端紫外光 / ひさき / 小型衛星 / ＥＵＶ / EUV / 外惑星プラズマ / ひさき衛星 / 木星磁気圏 / 極端紫外線 / 外惑星探査 / 宇宙プラズマ / 外惑星火山活動 / ジュノ衛星 / イオトーラス / リモートセンシング / 宇宙空間

Outline of Final Research Achievements

We have studied Jupiter, which has a strong magnetic field similar to the Earth. There is also a region called the magnetosphere around Jupiter, inside which Jupiter's moon (Io satellite) orbits. The satellite Io has volcanic activity, and gas emitted from the volcano becomes ions, forming a torus like Saturn's ring. Then, due to the influence of this volcano, the rotation cycle of Jupiter changes, and the electrons carried from the area far away from Jupiter (area 10-30 times the radius of Jupiter away from Jupiter toward anti-sunward). Since the last century researchers had doubted the truth and existence. Our results were derived by comprehensively analyzing the observation data of satellites made in Japan (Hisaki) and the United States(Juno).

Academic Significance and Societal Importance of the Research Achievements

最近の高等学校の理科（地学）の教科書に記述されている外惑星に関する項目は博物学的なものでしかなく、物理としては面白くない。今回の我々の成果は、単純な力学に置き換え理解することもでき、物理を得意とする高校生が、将来、宇宙科学や惑星科学を目指すきっかけとなる解りやすい惑星物理学の例を提示した。
日本の宇宙惑星科学が欧米に引けを取ることなく存在感を維持するためには、日本の得意技術の精悦化にあることを証明した結果である。

Research Products

• [Int'l Joint Research] NASA/サウスウェスト研究所(米国)
• [Int'l Joint Research] International Space Institute(スイス)
• [Int'l Joint Research] ベルギー大学(ベルギー)
• [Int'l Joint Research] CNRS LATMOS(フランス)
• [Int'l Joint Research] Lancaster University(英国)
• [Int'l Joint Research] Colorado university/JPL/Southwest research institute(米国)
• [Int'l Joint Research] Lancaster University(英国)
• [Int'l Joint Research] LATMOS(CNRS)(フランス)
• [Int'l Joint Research] ベルギー大学(ベルギー)
• [Int'l Joint Research] マカオ大学/香港大学(中国)
• [Int'l Joint Research] Southwest Research Institute/コロラド大学/Smithsonian Astrophysical Observatory(米国)
• [Int'l Joint Research] LATMOS(フランス)
• [Int'l Joint Research] Lancaster University/University College London(英国)
• [Int'l Joint Research] University of Liege(ベルギー)
• [Journal Article] Spatially Asymmetric Increase in Hot Electron Fraction in the Io Plasma Torus During Volcanically Active Period Revealed by Observations by Hisaki/EXCEED From November 2014 to May 2015 (2020)
  • Author(s): Hikida R.、Yoshioka K.、Tsuchiya F.、Kagitani M.、Kimura T.、Bagenal F.、Schneider N.、Murakami G.、Yamazaki A.、Kita H.、Nerney E.、Yoshikawa I.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 125 Issue: 3 Pages: 333-336
  • DOI: 10.1029/2019ja027100
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Jovian UV Aurora's Response to the Solar Wind: Hisaki EXCEED and Juno Observations (2019)
  • Author(s): Kita H.、Kimura T.、Tao C.、Tsuchiya F.、Murakami G.、Yamazaki A.、Yoshioka K.、Ebert R.W.、Wilson R.J.、Allegrini F.、Clark G.、Connerney J. E. P.、Gladstone G. R.、Yoshikawa I.、Fujimoto M.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 124 Issue: 12 Pages: 10209-10218
  • DOI: 10.1029/2019ja026997
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Transient Change of Io's Neutral Oxygen Cloud and Plasma Torus Observed by Hisaki (2019)
  • Author(s): Koga Ryoichi、Tsuchiya Fuminori、Kagitani Masato、Sakanoi Takeshi、Yoshioka Kazuo、Yoshikawa Ichiro、Kimura Tomoki、Murakami Go、Yamazaki Atsushi、Smith H. Todd、Bagenal Fran
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 124 Issue: 12 Pages: 10318-10331
  • DOI: 10.1029/2019ja026877
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Short-term Variation in the Dawn?Dusk Asymmetry of the Jovian Radiation Belt Obtained from GMRT and Hisaki EXCEED Observations (2019)
  • Author(s): Kita H.、Misawa H.、Bhardwaj A.、Tsuchiya F.、Murakami G.、Tao C.、Kimura T.、Yoshioka K.、Yamazaki A.、Kasaba Y.、Yoshikawa I.、Fujimoto M.
  • Journal Title: The Astrophysical Journal Volume: 872 Issue: 2 Pages: L24-L24
  • DOI: 10.3847/2041-8213/ab0427
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Development of ground pipeline system for high-level scientific data products of the Hisaki satellite mission and its application to planetary space weather (2019)
  • Author(s): Kimura Tomoki、Yamazaki Atsushi、Yoshioka Kazuo、Murakami Go、Tsuchiya Fuminori、Kita Hajime、Tao Chihiro、Yoshikawa Ichiro、Kumamoto Atsushi、Yamauchi Chisato
  • Journal Title: Journal of Space Weather and Space Climate Volume: 9 Pages: A8-A8
  • DOI: 10.1051/swsc/2019005
  • Peer Reviewed
• [Journal Article] Corotation of Bright Features in the Io Plasma Torus (2018)
  • Author(s): Suzuki F.、Yoshioka K.、Hikida R.、Murakami G.、Tsuchiya F.、Kimura T.、Yoshikawa I.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 123 Issue: 11 Pages: 9420-9429
  • DOI: 10.1029/2018ja025363
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Influence of Io's 2015 Volcanic Activity on Jupiter's Magnetospheric Dynamics (2018)
  • Author(s): Yoshioka K.、Tsuchiya F.、Kagitani M.、Kimura T.、Murakami G.、Fukuyama D.、Yamazaki A.、Yoshikawa I.、Fujimoto M.
  • Journal Title: Geophysical Research Letters Volume: 45 Issue: 19
  • DOI: 10.1029/2018gl079264
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Enhancement of the Jovian Magnetospheric Plasma Circulation Caused by the Change in Plasma Supply From the Satellite Io (2018)
  • Author(s): Tsuchiya F.、Yoshioka K.、Kimura T.、Koga R.、Murakami G.、Yamazaki A.、Kagitani M.、Tao C.、Suzuki F.、Hikida R.、Yoshikawa I.、Kasaba Y.、Kita H.、Misawa H.、Sakanoi T.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 123 Issue: 8 Pages: 6514-6532
  • DOI: 10.1029/2018ja025316
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Identification of Extreme Ultraviolet Emission Lines of the Io Plasma Torus Observed by Hisaki/EXCEED (2018)
  • Author(s): Hikida R.、Yoshioka K.、Murakami G.、Kimura T.、Tsuchiya F.、Yamazaki A.、Yoshikawa I.、Iwagami N.
  • Journal Title: Journal of Geophysical Research: Planets Volume: 123 Issue: 7 Pages: 1723-1731
  • DOI: 10.1029/2018je005629
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spatial Distribution of Io's Neutral Oxygen Cloud Observed by Hisaki (2018)
  • Author(s): Koga Ryoichi、Tsuchiya Fuminori、Kagitani Masato、Sakanoi Takeshi、Yoneda Mizuki、Yoshioka Kazuo、Yoshikawa Ichiro、Kimura Tomoki、Murakami Go、Yamazaki Atsushi、Smith H. Todd、Bagenal Fran
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 123 Issue: 5 Pages: 3764-3776
  • DOI: 10.1029/2018ja025328
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Variation of Jupiter's Aurora Observed by Hisaki/EXCEED: 3. Volcanic Control of Jupiter's Aurora (2018)
  • Author(s): Tao, C., Kimura, T., Tsuchiya, F., Muirakami, G., Yoshioka, K., Yamazaki, A., S. V.. Badman, Misawa, H., Kita, H., Kasaba, Y., Yoshikawa, I., Fujimoto, M.
  • Journal Title: Geophysical Research Letters Volume: 45 Issue: 1 Pages: 71-79
  • DOI: 10.1002/2017gl075814
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Response of Jupiter's Aurora to Plasma Mass Loading Rate Monitored by the Hisaki Satellite During Volcanic Eruptions at Io (2018)
  • Author(s): T. Kimura, Y. Hiraki, C. Tao, F. Tsuchiya, P. A. Delamere, K. Yoshioka, G. Murakami, A. Yamazaki, H. Kita, S. V. Badman, K. Fukazawa, I. Yoshikawa, M. Fujimoto
  • Journal Title: Journal of Geophysical Research Volume: 123 Issue: 3 Pages: 1-15
  • DOI: 10.1002/2017ja025029
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The time variation of atomic oxygen emission around Io during a volcanic event observed with Hisaki/EXCEED (2017)
  • Author(s): Ryoichi Koga, Fuminori Tsuchiya, Masato Kagitani, Takeshi Sakanoi, Mizuki Yoneda, Kazuo Yoshioka, Tomoki Kimura, Go Murakami, Atsushi Yamazaki, Ichiro Yoshikawa, H Todd Smith
  • Journal Title: Icarus Volume: 299 Pages: 300-307
  • DOI: 10.1016/j.icarus.2017.07.024
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Volcanic activity on Io and its influence on the dynamics of the Jovian magnetosphere observed by EXCEED/Hisaki in 2015 (2017)
  • Author(s): Yoshikawa et al.
  • Journal Title: Earth, Planets and Space Volume: 69 Pages: 11-17
  • Peer Reviewed / Open Access
• [Journal Article] Transient brightening of Jupiter’s aurora observed by the Hisaki satellite and Hubble Space Telescope during approach phase of the Juno spacecraft (2017)
  • Author(s): Tomoki Kimura, J. D. Nichols, R. L. Gray, C. Tao, G. Murakami, A. Yamazaki, S. V. Badman, F. Tsuchiya, K. Yoshioka, H. Kita, D. Grodent, G. Clark, I. Yoshikawa, and M. Fujimoto
  • Journal Title: Geophysical Research Letters Volume: 44 Issue: 10 Pages: 4523-4531
  • DOI: 10.1002/2017gl072912
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Radial variation of sulfur and oxygen ions in the Io plasma torus as deduced from remote observations by Hisaki, Journal of Geophysical Research (2017)
  • Author(s): Yoshioka, K., F. Tsuchiya, T. Kimura, M. Kagitani, G. Murakami, A. Yamazaki, M. Kuwabara, F. Suzuki, R. Hikida, I. Yoshikawa, and M. Fujimoto, F. Bagenal
  • Journal Title: Journal of Geophysical Research Volume: 122 Issue: 3 Pages: 2999-3012
  • DOI: 10.1002/2016ja023691
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Response of Jupiter's auroras to conditions in the interplanetary medium as measured by the Hubble Space Telescope and Juno (2017)
  • Author(s): J. D. Nichols, S. V. Badman, F. Bagenal, S. J. Bolton, B. Bonfond, E. J. Bunce, J. T., Clarke, J. E. P. Connerney, S.W. H. Cowley, R. W. Ebert, M. Fujimoto, J.-C. G_rard, G. R. Gladstone, D. Grodent, T. Kimura, et al.
  • Journal Title: Geophysical Research Letters Volume: 44 Issue: 15 Pages: 7643-7652
  • DOI: 10.1002/2017gl073029
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Identifying the energy supply process for the Io plasma torus during the sudden brightening events. (2019)
  • Author(s): S.Nishimura, F.Suzuki, K.Yoshioka, R.Hikida, G.Murakami, F.Tsuchiya, T.Kimura, and I.Yoshikawa
  • Organizer: MOP conference
  • Int'l Joint Research
• [Presentation] Revealing the energy source for the IPT by measuring the duration of the sudden IPT brightenings (2019)
  • Author(s): S.Nishimura, F.Suzuki, K.Yoshioka, R.Hikida, G.Murakami, F.Tsuchiya, T.Kimura, and I.Yoshikawa
  • Organizer: AGU fall meeting
  • Int'l Joint Research
• [Presentation] The radial transport of plasmas around Jupiter’s inner magnetosphere with response to Io’s volcanic activity (2019)
  • Author(s): Yoshioka, K., F. Tsuchiya, M. Kagitani, T. Kimura, G. Murakami, D. Fukuyama, R. Hikida, F. Suzuki, A. Yamazaki, I. Yoshikawa, and M. Fujimoto
  • Organizer: AGU Fall meeting
  • Int'l Joint Research
• [Presentation] The influence of Io’s volcanic activity in 2015 on Jupiter’s magnetospheric dynamics (2019)
  • Author(s): ：Yoshioka, K., F. Tsuchiya, M. Kagitani, T. Kimura, G. Murakami, D. Fukuyama, R. Hikida, F. Suzuki, A. Yamazaki, I. Yoshikawa, and M. Fujimoto
  • Organizer: MOP conference
  • Int'l Joint Research
• [Presentation] Study on the dawn-dusk asymmetry of Jupiter's radiation belt using radio interferometer and Hisaki (2019)
  • Author(s): Kita, Hajime; Misawa, Hiroaki; Bhardwaj, Anil; Tsuchiya, Fuminori; Murakami, Go; Tao, Chihiro; Kimura, Tomoki; Yoshioka, Kazuo; Yamazaki, Atsushi; Yoshikawa, Ichiro; Fujimoto, Masaki
  • Organizer: EPSC-DPS Joint Meeting 2019
  • Int'l Joint Research
• [Presentation] Plasma and energy transport in Jupiter’s inner magnetosphere as deduced from Hisaki observation (2018)
  • Author(s): Yoshioka, K., F., Tsuchiya, M. Kagitani, T. Kimura, G. Murakami, I. Yoshikawa, A. Yamazaki, R. Hikida, and M. Fujimoto
  • Organizer: MOP meeting 2018
  • Int'l Joint Research
• [Presentation] 木星磁気圏の光学観測データに対するLassoを利用した変動周期のスパース推定 (2018)
  • Author(s): 鈴木文晴, 吉岡和夫, 吉川一朗
  • Organizer: 「STE現象報告会」「MTI 研究集会」「IUGONET 研究集会」「宇宙空間からの地球超高層大気観測に関する研究会」「科学とデータ研究集会」合同研究集会
• [Presentation] Atomic oxygen densities and source rate in Io's neutral cloud derived from the Hisaki observation (2018)
  • Author(s): Koga, R., Tsuchiya, F., Kagitani, M., Sakanoi, T., Yoshikawa, I., Yoshioka, K., Murakami, G., Yamazaki, A., Kimura, T., Smith, H. T.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Spatial Distribution of Io's Neutral Oxygen Cloud During Volcanically Quiet and Active Periods in 2014-2015 (2018)
  • Author(s): Koga, R., Tsuchiya, F., Kagitani, M., Sakanoi, T., Kimura, T., Yoshikawa, I., Yoshioka, K., Yamazaki, A., Murakami, G., Smith, H. T.
  • Organizer: Conference on Magnetospheres of the Outer Planets 2018
  • Int'l Joint Research
• [Presentation] ひさきとALMAの観測によるイオ大気生成・散逸過程の研究 (2018)
  • Author(s): 古賀亮一, 坂野井健, 鈴木達也, 平原靖大, 土屋史紀, 鍵谷将人, 木村智樹, 吉川一朗, 吉岡和夫, 村上豪, 山崎敦
  • Organizer: ALMA Workshop Connecting Solar System and Protoplanetary Disks with ALMA
• [Presentation] Effect of plasma density around Io on local electron heating in the Io plasma torus (2017)
  • Author(s): Tsuchiya et al.
  • Organizer: American Geophysical Union, Fall Meeting 2017
  • Int'l Joint Research
• [Presentation] he Extreme Ultraviolet spectrometer on bard the Hisaki satellite (2017)
  • Author(s): Yoshioka et al.
  • Organizer: American Geophysical Union, Fall Meeting 2017
  • Int'l Joint Research / Invited
• [Remarks] The influence of Io on Jupiter's Magnetosphere
  • URL: https://www.issibern.ch/teams/iojupitermagnet/
• [Funded Workshop] ISSI (International Space Science Institute) International Teams (2017)