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Evaluation of the formation mechanism of planetary radiation belts by direct measurement of particle acceleration processes

Research Project

Project/Area Number 18H03727
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionTohoku University

Principal Investigator

加藤 雄人  東北大学, 理学研究科, 教授 (60378982)

Co-Investigator(Kenkyū-buntansha) 笠原 慧  東京大学, 大学院理学系研究科(理学部), 准教授 (00550500)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Granted (Fiscal Year 2022)
Budget Amount *help
¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000)
Fiscal Year 2022: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2019: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2018: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Keywords宇宙プラズマ・プラズマ波動 / 地球惑星磁気圏 / 太陽地球システム・宇宙天気 / オーロラ・磁気嵐
Outline of Annual Research Achievements

本研究は、磁化天体に普遍的な高エネルギー粒子加速機構を解明することを最終目的として、宇宙空間で生じる電磁波と粒子との間のエネルギー交換過程について究明した。目的を達成するために本研究では、【1】あらせ衛星を中心とした地球磁気圏・放射線帯領域での衛星観測データを用いた解析研究、【2】大規模計算機実験による惑星電磁圏での波動・粒子間の共鳴過程の究明、【3】WPIA機上ソフトウェアの最適化とWPIA手法の確立、をそれぞれ実施した。
2019年度は課題【1】に関して、あらせ衛星による観測結果の解析により、ホイッスラーモード・コーラス放射と数keV-数十keVのエネルギー帯の電子との共鳴現象を捉えたイベントの事例解析ならびに統計解析を実施した。特に、ピッチ角散乱により大気へ降下する電子とコーラス放射の波動強度との対応に高い相関が見られること、コーラス放射の波動強度ががPc-5帯のULF波動と同期して増幅するイベントが見出され、数十keV帯の電子の温度異方性ならびにフラックスがULF波動によって大きな変調を受けることにより生じていることなどを明らかとした。課題【2】に関して、コヒーレントなホイッスラーモード波動による低ピッチ角電子の共鳴現象に関する計算機シミュレーションを実施して、ピッチ角の小さい電子に対して生じる特異な非線形過程の存在を見出し、ピッチ角が大きく変動する要因を理論的に明らかとした。課題【3】に関して、前年度までに検討した「位相の連続性」を保証するために最適なフィルタや波形処理フローを、WPIA処理に取り入れ、処理結果に及ぼされる影響を検討した。木星氷衛星探査ミッションJUICEにおけるS-WPIAでの解析フローについて、JUICE搭載機器の仕様に基づいた観測シーケンスを検討し確立した。以上成果は8編の学術論文ならびに招待講演7件を含む30件の国内外での学会・研究会での発表として公表した。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

本研究で中心課題としている衛星データ解析研究、シミュレーション研究、WPIA手法の検討のそれぞれについて当初の計画通りに進められており、成果も既に上がっている。研究組織内での議論は円滑に進められており、当初の研究計画に対して順調に進展していると判断される。

Strategy for Future Research Activity

研究は順調に進展しており、次年度も当初の研究計画に従って研究を遂行する方針である。

Report

(2 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(61 results)

All 2020 2019 2018 Other

All Int'l Joint Research (4 results) Journal Article (13 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 13 results,  Open Access: 9 results) Presentation (44 results) (of which Int'l Joint Research: 23 results,  Invited: 14 results)

  • [Int'l Joint Research] 宇宙科学研究所(スウェーデン)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] テキサス大学ダラス校(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 台湾・国立中央大学(その他の国・地域)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Texas at Dallas(米国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Comprehensive Observations of Substorm‐Enhanced Plasmaspheric Hiss Generation, Propagation, and Dissipation2020

    • Author(s)
      Liu Nigang、Su Zhenpeng、Gao Zhonglei、Zheng Huinan、Wang Yuming、Wang Shui、Miyoshi Yoshizumi、Shinohara Iku、et al.
    • Journal Title

      Geophysical Research Letters

      Volume: 47

    • DOI

      10.1029/2019gl086040

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anomalous Trapping of Low Pitch Angle Electrons by Coherent Whistler Mode Waves2019

    • Author(s)
      Kitahara M.、Katoh Y.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 124 Pages: 5568-5583

    • DOI

      10.1029/2019ja026493

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Systematic Study in Characteristics of Lower Band Rising‐Tone Chorus Elements2019

    • Author(s)
      Shue Jih‐Hong、Nariyuki Yasuhiro、Katoh Yuto、Saito Shinji、Kasahara Yoshiya、Hsieh Yi‐Kai、Matsuda Shoya、Goto Yoshitaka
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 124 Pages: 9003-9016

    • DOI

      10.1029/2019ja027368

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Strong Diffusion of Energetic Electrons by Equatorial Chorus Waves in the Midnight‐to‐Dawn Sector2019

    • Author(s)
      Kasahara S.、Miyoshi Y.、Kurita S.、Yokota S.、Keika K.、Hori T.、Kasahara Y.、Matsuda S.、Kumamoto A.、Matsuoka A.、Seki K.、Shinohara I.
    • Journal Title

      Geophysical Research Letters

      Volume: 46 Pages: 12685-12692

    • DOI

      10.1029/2019gl085499

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cusp and Nightside Auroral Sources of O + in the Plasma Sheet2019

    • Author(s)
      Kistler L. M.、Mouikis C. G.、Asamura K.、Yokota S.、Kasahara S.、Miyoshi Y.、Keika K.、Matsuoka A.、Shinohara I.、Hori T.、Kitamura N.、Petrinec S. M.、Cohen I. J.、Delcourt D. C.
    • Journal Title

      Journal of Geophysical Research

      Volume: 124 Pages: 10036-10047

    • DOI

      10.1029/2019ja027061

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Statistical Properties of Molecular Ions in the Ring Current Observed by the Arase (ERG) Satellite2019

    • Author(s)
      Seki K.、Keika K.、Kasahara S.、Yokota S.、Hori T.、Asamura K.、Higashio N.、Takada M.、Ogawa Y.、Matsuoka A.、Teramoto M.、Miyoshi Y.、Shinohara I.
    • Journal Title

      Geophysical Research Letters

      Volume: 46 Pages: 15-15

    • DOI

      10.1029/2019gl084163

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Meridional Distribution of Middle‐Energy Protons and Pressure‐Driven Currents in the Nightside Inner Magnetosphere: Arase Observations2019

    • Author(s)
      Imajo S.、Nos? M.、Kasahara S.、Yokota S.、Matsuoka A.、Keika K.、Hori T.、Teramoto M.、Yamamoto K.、Oimatsu S.、Nomura R.、Fujimoto A.、Shinohara I.、Miyoshi Y.
    • Journal Title

      Journal of Geophysical Research

      Volume: 124 Pages: 5719-5733

    • DOI

      10.1029/2019ja026682

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Acceleration of Ions in Jovian Plasmoids: Does Turbulence Play a Role?2019

    • Author(s)
      Kronberg E. A.、Grigorenko E. E.、Malykhin A.、Kozak L.、Petrenko B.、Vogt M. F.、Roussos E.、Kollmann P.、Jackman C. M.、Kasahara S.、Malova Kh. V.、Tao C.、Radioti A.、Masters A.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 124 Pages: 5056-5069

    • DOI

      10.1029/2019ja026553

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Visualization of rapid electron precipitation via chorus element wave?particle interactions2019

    • Author(s)
      Ozaki M. et al.
    • Journal Title

      Nature Comm.

      Volume: 10 Pages: 1-9

    • DOI

      10.1038/s41467-018-07996-z

    • NAID

      120006550406

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Microscopic Observations of Pulsating Aurora Associated With Chorus Element Structures: Coordinated Arase Satellite‐PWING Observations2018

    • Author(s)
      Ozaki M. et al.
    • Journal Title

      Geophys. Res. Lett.

      Volume: 45 Pages: 1-10

    • DOI

      10.1029/2018gl079812

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras2018

    • Author(s)
      Fukizawa M.、Sakanoi T.、Miyoshi Y.、Hosokawa K.、Shiokawa K.、Katoh Y.、Kazama Y.、Kumamoto A.、Tsuchiya F.、Miyashita Y.、Tanaka Y. ‐M.、Kasahara Y.、Ozaki M.、Matsuoka A.、Matsuda S.、Hikishima M.、Oyama S.、Ogawa Y.、Kurita S.、Fujii R.
    • Journal Title

      Geophys. Res. Lett.

      Volume: 45

    • DOI

      10.1029/2018gl080145

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Temporal and Spatial Correspondence of Pc1/EMIC Waves and Relativistic Electron Precipitations Observed With Ground-Based Multi-Instruments on 27 March 20172018

    • Author(s)
      Hirai A.、Tsuchiya F.、Obara T.、Kasaba Y.、Katoh Y.、Misawa H.、Shiokawa K.、Miyoshi Y.、Kurita S.、Matsuda S.、Connors M.、Nagatsuma T.、Sakaguchi K.、Kasahara Y.、Kumamoto A.、Matsuoka A.、Shoji M.、Shinohara I.、Albert J. M.
    • Journal Title

      Geophys. Res. Lett.

      Volume: 45

    • DOI

      10.1029/2018gl080126

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Direct measurements of two-way wave-particle energy transfer in a collisionless space plasma2018

    • Author(s)
      Kitamura N.、Kitahara M.、Shoji M.、Miyoshi Y.、Hasegawa H.、Nakamura S.、Katoh Y.、Saito Y.、Yokota S.、Gershman D. J.、Vinas A. F.、Giles B. L.、Moore T. E.、Paterson W. R.、Pollock C. J.、Russell C. T.、Strangeway R. J.、Fuselier S. A.、Burch J. L.
    • Journal Title

      Science

      Volume: 361 Pages: 1000-1003

    • DOI

      10.1126/science.aap8730

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Cross-reference simulations by scalable communication library for the study of wave-particle interactions in planetary magnetospheres2019

    • Author(s)
      Katoh, Y., K. Fukazawa, T. Nanri, and Y. Miyake
    • Organizer
      Asia Oceania Geosciences Society (AOGS) 16th Annual Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theory and computer simulations on whistler-mode chorus emissions and related wave-particle interactions in planetary magnetospheres2019

    • Author(s)
      Katoh, Y.
    • Organizer
      2019 URSI-Japan Radio Science Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Simulation study of the whistler-mode chorus generation in the Earth's inner magnetosphere2019

    • Author(s)
      Katoh, Y. and Y. Omura
    • Organizer
      3rd Asia-Pacific Conference on Plasma Physics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Modulation of the whistler-mode chorus generation by ULF waves in the inner magnetosphere2019

    • Author(s)
      Katoh, Y. and L. Chen
    • Organizer
      American Geophysical Union 2019 Fall Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cross-Reference Simulation by Code-To-Code Adapter (CoToCoA) Library for the Study of Planetary Magnetospheres2019

    • Author(s)
      Katoh, Y., K. Fukazawa, T. Nanri, Y. Miyake
    • Organizer
      High Performance Computing in Asia-Pacific Region (HPC Asia 2020)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cross-reference simulations by scalable communication library for the study of wave-particle interactions in planetary magnetospheres2019

    • Author(s)
      Katoh, Y., K. Fukazawa, T. Nanri, and Y. Miyake
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ULF wave modulation of the whistler-mode chorus generation in the inner magnetosphere2019

    • Author(s)
      Katoh, Y., L. Chen
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Theory and simulation of anomalous trapping of low pitch angle electrons by whistler mode chorus emissions2019

    • Author(s)
      Kitahara, M. and Y. Katoh
    • Organizer
      American Geophysical Union Fall Meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] あらせ衛星搭載の PWE/WFC によって計測した波形データの較正手法の評価2019

    • Author(s)
      北原 理弘, 松田 昇也, 加藤 雄人, 笠原 禎也, 小嶋 浩嗣, 疋島 充
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Arase 衛星 S-WPIA 解析におけるプラズマ波動及び粒子の較正に関する評価2019

    • Author(s)
      三木 淳平, 小嶋 浩嗣, 加藤 雄人, 松田 昇也, 笠原 禎也, 西澤 宏幸, 疋島 充, 栗田 怜, 北原 理弘, 笠原 慧, 三好 由純, 熊本 篤志, 松岡 彩子, 横田 勝一郎, 堀 智昭, 桂華 邦裕
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Statistical study of EMIC wave-related electron precipitation at subauroral latitude2019

    • Author(s)
      Asuka Hirai, Fuminori Tsuchiya, Takahiro Obara, Yasumasa Kasaba, Yuto Katoh, Hiroaki Misawa, Kazuo Shiokawa, Yoshizumi Miyoshi, Satoshi Kurita, Martin Connors
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Pc4-5 帯 ULF 波動とのドリフト共鳴による高エネルギー電子の変動とコーラス放射の強度変調について2019

    • Author(s)
      大野 敦裕, 加藤 雄人, 寺本 万里子, 熊本 篤志, 土屋 史紀, 笠原 禎也, 松田 昇也, 松岡 彩子, 三谷 烈史, 堀 智昭, 笠原 慧, 横田 勝一郎, 桂華 邦裕, 三好 由純, 篠原 育
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Elastic collisions between magnetospheric electrons and neutral H2O molecules in the Enceladus torus by test particle simulation2019

    • Author(s)
      Tadokoro, H., and Y. Katoh
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Development of cross-reference framework for macro- and micro-scale simulations of the magnetosphere2019

    • Author(s)
      Keiichiro Fukazawa, Yuto Katoh, Takeshi Nanri, Yohei Miyake
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Pitch angle scattering due to elastic collisions between magnetospheric 500eV-50keV electrons and neutral H2O originated from Enceladus: Test particle simulation2019

    • Author(s)
      Tadokoro, H. and Y. Katoh
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Conjugated quasi-periodic ELF/VLF emissions between the Arase satellite and both Van Allen Probes2019

    • Author(s)
      Claudia Martinez Calderon, Frantisek Nemec, Kazuo Shiokawa, Yuto Katoh, Yoshiya Kasahara, Shoya Matsuda, Fuminori Tsuchiya, Atsushi Kumamoto, Mariko Teramoto, Ayako Matsuoka, Yoshizumi Miyoshi, Ondrej Santolik, George Hospodarksy
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] The Radio & Plasma Wave Investigation (RPWI) for JUICE for the investigation of Jupiter and Icy Moons System: Contributions from Japan2019

    • Author(s)
      Yasumasa Kasaba, Hiroaki Misawa, Fuminori Tsuchiya, Atsushi Kumamoto, Yuto Katoh, Tomoki Kimura, Hajime Kita, J.-E. Wahlund
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Statistical study of IPDP type EMIC wave-related electron precipitation at subauroral latitude2019

    • Author(s)
      Asuka Hirai, Fuminori Tsuchiya, Takahiro Obara, Yasumasa Kasaba, Yuto Katoh, Hiroaki Misawa, Kazuo Shiokawa, Yoshizumi Miyoshi, Satoshi Kurita, Martin G Connors
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Calibration of electric fields dedicated to the measurement of the S-WPIA of the Arase Satellite2019

    • Author(s)
      Miki Jumpei, Hirotsugu Kojima, Yuto Katoh, Shoya Matsuda, Yoshiya Kasahara, Mitsuru Hikishima, Satoshi Kurita, Masahiro Kitahara, Satoshi Kasahara, Yoshizumi Miyoshi, Atsushi Kumamoto, Ayako Matsuoka, Shoichiro Yokota, Tomoaki Hori, Kunihiro Keika
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Enhancement of whistler-mode chorus in association with Pc 4-5 ULF waves and related variation of high energy electrons2019

    • Author(s)
      Atsuhiro Ono, Yuto Katoh, Atsushi Kumamoto, Fuminori Tsuchiya, Mariko Teramoto, Yoshiya Kasahara, Shoya Matsuda, Ayako Matsuoka, Takefumi Mitani, Tomoaki Hori, Satoshi Kasahara, Shoichiro Yokota, Kunihiro Keika, Yoshizumi Miyoshi, Iku Shinohara
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Electron scattering by chorus waves as seen by ERG2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Kurita, S. Yokota, K. Keika, T. Hori, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, K. Seki, T. Mitani, Y. Kazama, H. U. Frey, V. Angelopoulos, I. Shinohara
    • Organizer
      ERG Science and Space Weather Workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pulsating aurora from electron scattering by chorus waves2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Kurita, S. Yokota, K. Keika, T. Hori, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, K. Seki, T. Mitani, Y. Kazama, H. U. Frey, V. Angelopoulos, I. Shinohara
    • Organizer
      American Geophysical Union Fall Meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Electron scattering by chorus waves as seen by ERG2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Kurita, S. Yokota, K. Keika, T. Hori, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, K. Seki, T. Mitani, Y. Kazama, H. U. Frey, V. Angelopoulos, I. Shinohara
    • Organizer
      ISEE-KASI workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Medium-Energy Particle experiments (MEPs) onboard ERG (Arase) for substorm observations2019

    • Author(s)
      Kasahara, S., S. Yokota, T. Mitani, K. Asamura, M. Hirahara, T. Takashima, K. Keika, T. Hori, Y. Miyoshi, I. Shinohara
    • Organizer
      International Conference on Substorm
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electron Scattering by Chorus Waves Generating Pulsating Aurora2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, T. Mitani, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, Y. Kazama, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, K. Seki, I. Shinohara
    • Organizer
      Asia Oceania Geosciences Society (AOGS) 16th Annual Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Pulsating aurora from electron scattering by chorus waves2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, T. Mitani, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, Y. Kazama, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, K. Seki, I. Shinohara
    • Organizer
      Magnetospheres of Outer Planets
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Pulsating aurora from electron scattering by chorus waves2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, T. Mitani, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, Y. Kazama, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, K. Seki, I. Shinohara
    • Organizer
      EGU General Assembly 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Strong diffusion of energetic electrons by equatorial chorus waves in the midnight-dawnside magnetosphere2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Kurita, S. Yokota, K. Keika, T. Hori, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, K. Seki, I. Shinohara
    • Organizer
      第146回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 放射線帯におけるWhistler chorus波動による電子のピッチ角散乱:strong diffusionの緯度分布2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Kurita, S. Yokota, K. Keika, T. Hori, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, K. Seki, I. Shinohara
    • Organizer
      ERG衛星粒子観測データ解析ワークショップ
    • Related Report
      2019 Annual Research Report
  • [Presentation] Electron scattering by isolated chorus elements observed near the magnetospheric equator2019

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, Y. Kasahara, S. Matsuda, A. Matsuoka, K. Keika, T. Hori, and I. Shinohara
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Simulation study of the whistler-mode chorus generation in the Earth's inner magnetosphere2019

    • Author(s)
      Katoh, Y. and Y. Omura
    • Organizer
      URSI AP-RASC 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Periodicity and spatial scale of wave-particle interactions in the magnetosphere2018

    • Author(s)
      Katoh, Y.
    • Organizer
      ISSI Workshop “Auroral Physics”
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Electron hybrid simulations of the nonlinear processes of whistler-mode chorus generation in the Earth's inner magnetosphere2018

    • Author(s)
      Katoh, Y., Y. Omura, Y. Miyake, H. Usui, and H. Nakashima
    • Organizer
      ISSS-13
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nonlinear processes of whistler-mode chorus generation in the Earth's inner magnetosphere2018

    • Author(s)
      Katoh, Y., Y. Omura, Y. Miyake, H. Usui, and H. Nakashima
    • Organizer
      American Geophysical Union Fall Meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Study of the modulation of whistler-mode chorus generation by ULF waves2018

    • Author(s)
      Katoh, Y. and L. Chen
    • Organizer
      Asia Oceania Geosciences Society (AOGS) 15th Annual Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Simulation study of the dependence of the whistler-mode chorus generation on properties of energetic electrons in the Earth's inner magnetosphere2018

    • Author(s)
      Katoh, Y., Y. Omura, Y. Miyake, H. Usui, and H. Nakashima
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Cross-reference simulations by scalable communication library for the study of wave-particle interactions in magnetospheres2018

    • Author(s)
      加藤雄人, 深沢圭一郎, 南里豪志
    • Organizer
      第144回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Strong diffusion of hot electrons powering diffuse aurora2018

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, T. Hori, I. Shinohara
    • Organizer
      American Geophysical Union Fall Meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Calibration of the medium-energy electron/ion analysers onboard ERG (Arase)2018

    • Author(s)
      Kasahara, S., S. Yokota, T. Mitani, K. Asamura, Y. Kazama, S-Y. Wang, K. Keika, T. Hori, T-F.Chang, Y. Miyoshi, and I. Shinohara
    • Organizer
      CAA cross-calibration and Cluster SOWG
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] In-situ observations of wave-particle interaction by ERG (Arase)2018

    • Author(s)
      Kasahara, S., Y. Miyoshi, I. Shinohara, K. Asamura, N. Higashio, Y. Kasahara, Y. Kazama, H. Kojima, A. Matsuoka, T. Mitani, S.-Y., Wang, and S. Yokota
    • Organizer
      Magnetic Reconnection in Space, Solar, Astrophysical, and Laboratory Plasmas 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Arase (ERG) Observation of Energetic Electrons in the Inner Magnetosphere and Roles of Waves2018

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, T. Mitani, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, Y. Kazama, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, K. Seki, I. Shinohara, K. Asamura, M. Hirahara, T. Takashima
    • Organizer
      Asia Oceania Geosciences Society (AOGS) 15th Annual Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Arase (ERG) Observation of Electron Scattering by Chorus Waves near the Magnetospheric Equator2018

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, T. Mitani, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, Y. Kazama, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, K. Seki, I. Shinohara
    • Organizer
      URSI Atlantic Radio Science meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Strong diffusion of energetic electrons into diffuse aurora2018

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, T. Hori, I. Shinohara
    • Organizer
      第144回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Electron scattering by chorus waves generating pulsating aurora2018

    • Author(s)
      Kasahara, S., Y. Miyoshi, S. Yokota, T. Mitani, Y. Kasahara, S. Matsuda, A. Kumamoto, A. Matsuoka, Y. Kazama, H. U. Frey, V. Angelopoulos, S. Kurita, K. Keika, K. Seki, I. Shinohara
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2022-07-01  

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