Analyses and Verification of Particle Acceleration and Scattering by Electromagnetic Cyclotron Waves in Space Plasmas

2021 Fiscal Year Annual Research Report

• Project/Area Number: 17H06140
• Research Institution: Kyoto University
• Principal Investigator: 大村 善治 京都大学, 生存圏研究所, 教授 (50177002)
• Co-Investigator(Kenkyū-buntansha): 天野 孝伸 東京大学, 大学院理学系研究科(理学部), 准教授 (00514853) ; 篠原 育 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 (20301723) ; 齋藤 義文 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 (30260011)
• Project Period (FY): 2017-05-31 – 2022-03-31
• Keywords: 波動粒子相互作用 / 放射線帯 / 磁気圏 / プラズマ波動 / 非線形過程 / プラズマ計測 / 宇宙天気 / 宇宙天体プラズマ

Outline of Annual Research Achievements

地球放射線帯変動のモデリングとしてテスト粒子シミュレーションを実行した。電子ピッチ角の理論的な時間変化を求め、数値グリーン関数の結果と比較することで、各共鳴がもたらす電子ピッチ角散乱過程とその様々な物理パラメータに対する依存性を明確に示すことに成功した。また斜め伝搬を含む電磁イオンサイクトトロン波による電子のピッチ散乱のデータベース構築のためのプログラム開発に着手し今後の研究展開の準備を行った。
昼側の磁気圏境界における磁気リコネクション領域において、ホイッスラーモード波と電子の相互作用の直接観測に成功し、内部磁気圏と同様の非線形成長過程が磁場勾配によって起こっていることを検証した。
「あらせ」衛星単独観測に加え，衛星－衛星間，衛星－地上観測網間の協調観測により、内部磁気圏における電磁サイクロトロン波による高エネルギー電子の加速・ 散乱機構に関する研究成果を多数上げることが出来た。特に、地上観測と衛星の協調観測が順調に進んだことにより、地球磁場に補足されている高エネルギー電子が電磁サイクロトロン波によるピッチ角散乱を受けて超高層大気に降り込む現象について、１秒以下の速い時間スケールにまでに及んで脈動オーロラの明滅をコントロールしていることを解明した。限られた衛星の観測データから波動-粒子相互作用を定量的に解析するために考案された波動粒子相関解析法によって、波動と粒子の間でのエネルギー交換が実際に宇宙空間中で行われていることを評価することが可能となり、速度分布関数の変化を捉えることに成功した。
超小型の粒子観測器については最も高い観測角度分解能とエネルギー分解能が要求される太陽風イオンの観測を行えるだけの性能を持った超小型軽量粒子観測器を設計することに成功した。また粒子センサーと共に波動粒子相関解析を実現するプラズマ波動観測器についてもASICによる超小型化を進めた。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Indian Institute of Geomagnetism(インド)
  • Country Name: INDIA
  • Counterpart Institution: Indian Institute of Geomagnetism
• [Int'l Joint Research] Peking University(中国)
  • Country Name: CHINA
  • Counterpart Institution: Peking University
• [Int'l Joint Research] University of Maryland/MIT Haystack Observatory/University of Iowa(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: University of Maryland/MIT Haystack Observatory/University of Iowa
  • # of Other Institutions: 4
• [Int'l Joint Research] Memorial University of Newfoundland/University of Alberta(カナダ)
  • Country Name: CANADA
  • Counterpart Institution: Memorial University of Newfoundland/University of Alberta
• [Int'l Joint Research] Charles University(チェコ)
  • Country Name: CZECH
  • Counterpart Institution: Charles University
• [Journal Article] Nonthermal electron acceleration at collisionless quasi-perpendicular shocks (2022)
  • Author(s): Amano, T., Matsumoto, Y., Bohdan, A., Kobzar, O., Matsukiyo, S., Oka, M., Niemiec, J., Pohl, M., & Hoshino, M.
  • Journal Title: Reviews of Modern Plasma Physics Volume: 6 Pages: 29
  • DOI: 10.1007/s41614-022-00093-1
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Theory of electron injection at oblique shock of finite thickness. (2022)
  • Author(s): Amano, T., & Hoshino, M.
  • Journal Title: The Astrophysical Journal Volume: 927 Pages: 132
  • DOI: 10.3847/1538-4357/ac4f49
  • Peer Reviewed / Open Access
• [Journal Article] Energetic electron precipitation induced by oblique whistler mode chorus emissions (2022)
  • Author(s): Hsieh, Y.-K., Omura, Y., & Kubota, Y.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 126 Pages: e2021JA029583
  • DOI: 10.1029/2021JA029583
  • Peer Reviewed
• [Journal Article] Development of miniaturized pick窶爽p amplification circuit for plasma particle detectors on board satellites (2022)
  • Author(s): Kikukawa, M., Asamura, K., Zushi, T., Kurita, S., & Kojima, H.
  • Journal Title: Earth, Planets and Space Volume: 74 Pages: -
  • DOI: 10.1186/s40623-022-01746-8
  • Peer Reviewed / Open Access
• [Journal Article] Direct observations of energy transfer from resonant electrons to whistler-mode waves in magnetosheath of Earth (2022)
  • Author(s): Kitamura, N., Amano, T., Omura, Y., Boardsen, S. A., Gershman, D. J., Miyoshi, Y., Kitahara, M., Katoh, Y., Kojima, H., Nakamura, S., Shoji, M., Saito, Y., Yokota et al.
  • Journal Title: Nature Communications Volume: 13 Pages: 6259
  • DOI: 10.1038/s41467-022-33604-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Critical comparison of collisionless fluid models: Nonlinear simulations of parallel firehose instability (2022)
  • Author(s): Jikei, T., & Amano, T.
  • Journal Title: Physics of Plasmas Volume: 29 Pages: 22102
  • DOI: 10.1063/5.0077064
  • Peer Reviewed
• [Journal Article] Space-to-space very low frequency radio transmission in the magnetosphere using the DSX and Arase satellites (2022)
  • Author(s): McCollough, J. P., Miyoshi, Y., Ginet, G. P., Johnston, W. R., Su, Y. J., Starks, M. J., ... & Langhals, J. T.
  • Journal Title: Earth, Planets and Space Volume: 74 Pages: 64
  • DOI: 10.1186/s40623-022-01605-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Solar wind energy input: The primary control factor of magnetotail reconnection site (2022)
  • Author(s): Nagai, T., & Shinohara, I.
  • Journal Title: Journal of Geophysical Research: Space Volume: 127 Pages: e2022JA030653
  • DOI: 10.1029/2022JA030653
  • Peer Reviewed / Open Access
• [Journal Article] Off-equatorial Pi2 pulsations inside and outside the plasmapause observed by the Arase satellite (2022)
  • Author(s): Teramoto, M., Miyoshi, Y., Matsuoka, A., Kasahara, Y., Kumamoto, A., Tsuchiya, F., Nose, M., Imajo, S., Shoji, M., Nakamura, S., Kitahara, M., & Shnohara, I.
  • Journal Title: Physics Volume: 127 Pages: e2021JA029677
  • DOI: 10.1029/2021JA029677
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Scattering of energetic electrons through nonlinear cyclotron resonance with coherent whistler-mode hiss emissions (2022)
  • Author(s): Tobita, M., & Omura, Y.
  • Journal Title: Physics of Plasmas Volume: 29 Pages: 112901
  • DOI: 10.1063/5.0106004
  • Peer Reviewed
• [Journal Article] A Statistical study of the solar wind dependence of multi-harmonic toroidal ULF waves observed by the Arase satellite (2022)
  • Author(s): Yamamoto, K., Seki, K., Matsuoka, A., Imajo, S., Teramoto, M., Kitahara, M., Kasahara, Y., Kumamoto, A., Tsuchiya, F., Shoji, M., Nakamura, S., Miyoshi, Y., & Shinohara, I.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 127 Pages: e2021JA029840
  • DOI: 10.1029/2021JA029840
  • Peer Reviewed
• [Journal Article] Loading a relativistic Kappa distribution in particle simulations (2022)
  • Author(s): Zenitani, S., & Nakano, S.
  • Journal Title: Physics of Plasmas Volume: 29 Pages: 113904
  • DOI: 10.1063/5.0117628
  • Peer Reviewed / Open Access
• [Journal Article] Cross-Energy Couplings from Magnetosonic Waves to Electromagnetic Ion Cyclotron Waves through Cold Ion Heating inside the Plasmasphere (2021)
  • Author(s): Asamura, K., Shoji, M., Miyoshi, Y., Kasahara, Y., Kasaba, Y., Kumamoto, A., Tsuchiya, F., Matsuda, S., Matsuoka, A., Teramoto, M., Kazama, Y., & Shinohara, I.
  • Journal Title: Physical Review Letters Volume: 127 Pages: 245101
  • DOI: 10.1103/PhysRevLett.127.245101
  • Peer Reviewed
• [Journal Article] Subpacket structure in strong VLF chorus rising tones: characteristics and consequences for relativistic electron acceleration (2021)
  • Author(s): Foster, J. C., Erickson, P. J., & Omura, Y.
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: 1窶?12
  • DOI: 10.1186/s40623-021-01467-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A non-local fluid closure for modeling cyclotron resonance in collisionless magnetized plasmas (2021)
  • Author(s): Jikei, T., & Amano, T.
  • Journal Title: Physics of Plasmas Volume: 28 Pages: 42105
  • DOI: 10.1063/5.0045335
  • Peer Reviewed
• [Journal Article] Arase observation of simultaneous electron scatterings by upper窶臣and and lower窶臣and chorus emissions (2021)
  • Author(s): Kazama, Y., Miyoshi, Y., Kojima, H., Kasahara, Y., Kasahara, S., Usui, H., ... & Shinohara, I.
  • Journal Title: Geophysical Research Letters Volume: 48 Pages: e2021GL093708
  • DOI: 10.1029/2021gl093708
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Energy transfer between hot protons and electromagnetic ion cyclotron waves in compressional Pc5 ultra-low frequency waves (2021)
  • Author(s): Kitamura, N., Shoji, M., Nakamura, S., Kitahara, M., Amano, T., Omura, Y., Hasegawa, H., Boardsen, S. A., Miyoshi, Y., Katoh, Y., Teramoto, M., Saito, Y., Yokota, S., Hirahara, M. et al.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 126 Pages: e2020JA028912
  • DOI: 10.1029/2020JA028912
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Direct antenna impedance measurement for quantitative AC electric field measurement by Arase (2021)
  • Author(s): Matsuda, S., Kojima, H., Kasahara, Y., Kasaba, Y., Kumamoto, A., Tsuchiya, F., Matsuoka, A., Miyoshi, Y., & Shinohara, I.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 126 Pages: e2021JA029111
  • DOI: 10.1029/2021JA029111
  • Peer Reviewed
• [Journal Article] Multipoint measurement of fine窶尽tructured EMIC waves by arase, Van Allen probe A (2021)
  • Author(s): Matsuda, S., Miyoshi, Y., Kasahara, Y., Blum, L., Colpitts, C., Asamura, K., Kasaba, Y., Matsuoka, A., Tsuchiya, F., Kumamoto, A., Teramoto, M., Nakamura, S., Kitahara, M., Shinohara, I., Reeves, G., Spence H., Shiokawa, K., Nagatsuma, T., Oyama, S., & Mann, I.R.
  • Journal Title: Geophysical Research Letters Volume: 48 Pages: e2021GL096488
  • DOI: 10.1029/2021GL096488
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae (2021)
  • Author(s): Miyoshi, Y., Hosokawa, K., Kurita, S., Oyama, S. I., Ogawa, Y., Saito, S., ... & Nakamura, S.
  • Journal Title: Scientific Reports Volume: 11 Pages: 13724
  • DOI: 10.1038/s41598-021-92611-3
  • Peer Reviewed / Open Access
• [Journal Article] Dawn窶織usk Confinement of Magnetic Reconnection Site in the Near窶職arth Magnetotail and Its Implication for Dipolarization and Substorm Current System (2021)
  • Author(s): Nagai, T., & Shinohara, I.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 126 Pages: e2021JA02961
  • DOI: 10.1029/2021JA029691
  • Peer Reviewed / Open Access
• [Journal Article] Mach number dependence of ion-scale kinetic instability at collisionless perpendicular shock: Condition for Weibel-dominated shock (2021)
  • Author(s): Nishigai, T., & Amano, T.
  • Journal Title: Physics of Plasmas Volume: 28 Pages: 72903
  • DOI: 10.1063/5.0051269
  • Peer Reviewed
• [Journal Article] Multipoint analysis of source regions of EMIC waves and rapid growth of subpackets (2021)
  • Author(s): Ojha, B., Omura, Y., Singh, S., & Lakhina, G. S.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 126 Pages: e2021JA029514
  • DOI: 10.1029/2021JA029514
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Nonlinear wave growth theory of whistler-mode chorus and hiss emissions in the magnetosphere (2021)
  • Author(s): Omura, Y.
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: 1譛?28譌・
  • DOI: 10.1186/s40623-021-01380-w
  • Peer Reviewed / Open Access
• [Journal Article] Inter窶燭alibrated Measurements of Intense Whistlers by Arase and Van Allen Probes (2021)
  • Author(s): Santolテュk, O., Miyoshi, Y., Kolmaナ。ovテ。, I., Matsuda, S., Hospodarsky, G. B., Hartley, D. P., Kasahara, Y., Kojima, H., Matsuoka, A., Shinohara, I., Kurth, W.S., & Kletzing, C.A.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 126 Pages: e2021JA029700
  • DOI: 10.1029/2021JA029700
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Discovery of proton hill in the phase space during interactions between ions and electromagnetic ion cyclotron waves (2021)
  • Author(s): Shoji, M., Miyoshi, Y., Kistler, L. M., Asamura, K., Matsuoka, A., Kasaba, Y., Matsuda, S., Kasahara, Y., & Shinohara, I.
  • Journal Title: Scientific Reports Volume: 11 Pages: 13480
  • DOI: 10.1038/s41598-021-92541-0
  • Peer Reviewed / Open Access
• [Presentation] プラズマ粒子シミュレーションの動的負荷分散フレームワークについて (2023)
  • Author(s): 天野孝伸, 松本洋介
  • Organizer: STEシミュレーション研究会・KDKシンポジウム合同研究会
• [Presentation] Energetic electron precipitation rates due to oblique chorus emissions: Numerical Green's function method (2023)
  • Author(s): 謝 怡凱, 大村 善治
  • Organizer: STEシミュレーション研究会・KDKシンポジウム合同研究会
• [Presentation] Electron scattering and precipitation due to oblique chorus emissions (2023)
  • Author(s): Hsieh, Y.-K.
  • Organizer: Joint Workshop of "Physics and application of whistler waves” and “Future perspective of study on nonlinear wave-particle interaction”
  • Int'l Joint Research / Invited
• [Presentation] Direct observations of energy transfer from resonant electrons to whistler-mode waves (dayside reconnection, magnetosheath, and bow shock) (2023)
  • Author(s): Naritoshi Kitamura
  • Organizer: Joint Workshop of "Physics and application of whistler waves” and “Future perspective of study on nonlinear wave-particle interaction”
  • Int'l Joint Research / Invited
• [Presentation] Direct observations of energy transfer from resonant electrons to whistler-mode waves in magnetosheath of Earth (2023)
  • Author(s): N. Kitamura, T. Amano, Y. Omura, S. A. Boardsen, D. J. Gershman, Y. Miyoshi, M. Kitahara, Y. Katoh, H. Kojima, S. Nakamura, M. Shoji, Y. Saito, S. Yokota, et al.
  • Organizer: Symposium on the Future of Heliospheric Science: From Geotail and Beyond
  • Int'l Joint Research
• [Presentation] Whistler-mode triggered emissions (2023)
  • Author(s): Omura, Y.
  • Organizer: Joint Workshop of "Physics and application of whistler waves” and “Future perspective of study on nonlinear wave-particle interaction”
  • Int'l Joint Research / Invited
• [Presentation] A plasma activation function for deep neural networks (2023)
  • Author(s): 銭谷誠司
  • Organizer: STEシミュレーション研究会・KDKシンポジウム合同研究会
• [Presentation] Electron injection at high-Mach number collisionless oblique shocks (2022)
  • Author(s): Amano, T.
  • Organizer: 7th Workshop on Magnetic Fields in High-energy Density Laboratory Plasmas
  • Int'l Joint Research
• [Presentation] Dynamic Load Balancing for Particle-based Plasma Simulations (2022)
  • Author(s): 天野孝伸, 松本洋介
  • Organizer: 第152回地球電磁気・地球惑星圏学会講演会
• [Presentation] Theory, Simulation, and Observation for Electron Injection at Collisionless Shocks (2022)
  • Author(s): Amano, T.
  • Organizer: Asia Oceania Geosciences Society 19th Annual Meeting
  • Int'l Joint Research / Invited
• [Presentation] Electron Injection via Stochastic Shock Drift Acceleration: Theory, Simulation, and Observation (2022)
  • Author(s): Amano, T.
  • Organizer: EGU General Assembly 2022
  • Int'l Joint Research
• [Presentation] Self-generation of waves by energetic electron streaming at collisionless shocks (2022)
  • Author(s): Amano, T.
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] Electron precipitation rates due to nonlinear effects of parallel and oblique whistler mode waves in the Earth’s inner magnetic field (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: American Geophysical Union 2022 Fall Meeting
  • Int'l Joint Research
• [Presentation] Energetic electron precipitation associated with nonlinear wave-particle interactions between electrons and very oblique chorus waves (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: The 10th VLF/ELF Remote Sensing of Ionospheres and Magnetospheres Workshop
  • Int'l Joint Research
• [Presentation] Energetic electron precipitation induced by very oblique chorus waves in the Earth’s inner magnetosphere (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: 第152回地球電磁気・地球惑星圏学会講演会
• [Presentation] Pitch angle scattering rates and precipitation rates of energetic electrons interacting with lower-band chorus emissions during nonlinear interactions with multiple resonances (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: Asia Oceania Geosciences Society 19th Annual Meeting
  • Int'l Joint Research
• [Presentation] Comparison of Energetic Electron Precipitation Induced by Parallel and Oblique Whistler Mode Chorus Waves (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: Asia Oceania Geosciences Society 19th Annual Meeting
  • Int'l Joint Research
• [Presentation] Precipitation of resonant electrons interacting with parallel and oblique whistler mode chorus waves (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: 3rd URSI Atlantic / Asia-Pacific Radio Science Meeting
  • Int'l Joint Research
• [Presentation] Precipitation rates of energetic electrons interacting with parallel and oblique whistler mode chorus emissions in the magnetosphere (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: 日本地球惑星科学連合2022年大会
  • Int'l Joint Research
• [Presentation] Energetic electron loss process associating with oblique chorus emissions in the outer radiation belt (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: The General Assembly 2022 of the European Geosciences Union
  • Int'l Joint Research
• [Presentation] Energetic electron precipitation driven by oblique whistler mode chorus emissions: Test particle simulation and Green’s function method (2022)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: The 14th International School for Space Simulations
  • Int'l Joint Research
• [Presentation] Measurements of nongyrotropicelectrons around the cyclotron resonance velocity in whistler-mode waves (2022)
  • Author(s): N. Kitamura, T. Amano, Y. Omura, S. A. Boardsen, D. J. Gershman, Y. Miyoshi, M. Kitahara, Y. Katoh, H. Kojima, S. Nakamura, M. Shoji, Y. Saito, S. Yokota, et al.
  • Organizer: MMS Community workshop #8
  • Int'l Joint Research
• [Presentation] Measurements of nongyrotropic electrons around the cyclotron resonance velocity in whistler-mode waves (2022)
  • Author(s): N. Kitamura, T. Amano, Y. Omura, S. A. Boardsen, D. J. Gershman, Y. Miyoshi, M. Kitahara, Y. Katoh, H. Kojima, S. Nakamura, M. Shoji, Y. Saito, S. Yokota, , et al.
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Observational evidence of nonlinear growth of whistler-mode waves around quasi-perpendicular bow shocks (2022)
  • Author(s): N. Kitamura, T. Amano, Y. Omura, S. A. Boardsen, M. Kitahara, Y. Miyoshi, S. Nakamura, M. Shoji, Y. Katoh, H. Kojima, S.-H. Lee, D. J. Gershman, Y. Saito, M. Hirahara, S. Yokota, et al.
  • Organizer: 第152回地球電磁気・地球惑星圏学会講演会
• [Presentation] Direct observations of energy transfer from resonant electrons to whistler-mode waves near the dayside magnetopause reconnection (2022)
  • Author(s): N. Kitamura, T. Amano, Y. Omura, S. A. Boardsen, D. J. Gershman, Y. Miyoshi, M. Kitahara, Y. Katoh, H. Kojima, S. Nakamura, M. Shoji, Y. Saito, S. Yokota, et al.
  • Organizer: American Geophysical Union 2022 Fall Meeting
  • Int'l Joint Research
• [Presentation] Nonlinear Wave Growth Process of Whistler-mode Hiss and Chorus Emissions in the Magnetosphere (2022)
  • Author(s): Omura, Y., Liu, Y., Fujiwara, Y., & Nogi, T.
  • Organizer: American Geophysical Union 2022 Fall Meeting
  • Int'l Joint Research
• [Presentation] Nonlinear Signatures of VLF Triggered Emissions (2022)
  • Author(s): Omura, Y.
  • Organizer: The 10th VLF/ELF Remote Sensing of Ionospheres and Magnetospheres Workshop
  • Int'l Joint Research / Invited
• [Presentation] 一様磁化プラズマ中でのホイッスラーモード・トリガードエミッション (2022)
  • Author(s): 大村善治
  • Organizer: 第152回地球電磁気・地球惑星圏学会講演会
• [Presentation] Particle simulation of whistler-mode hiss emissions in a homogeneous magnetic field (2022)
  • Author(s): Omura, Y.
  • Organizer: Asia Oceania Geosciences Society 19th Annual Meeting
  • Int'l Joint Research
• [Presentation] Effective energy range of electrons exciting whistler-mode chorus emissions in the inner magnetosphere (2022)
  • Author(s): Omura, Y.
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Whistler-mode Triggered Emissions in a Homogeneous Magnetic Field (2022)
  • Author(s): Omura, Y.
  • Organizer: 6th Asia Pacific Conference on Plasma Physics, Division of Plasma Physics, Association of Asia Pacific Physical Societies
  • Int'l Joint Research
• [Presentation] Plasmoid-dominated turbulent reconnection in symmetric and asymmetric systems (2022)
  • Author(s): Zenitani, S., Yamamoto, M., and T. Miyoshi
  • Organizer: US-Japan Workshop on Magnetic Reconnection (MR2022)
  • Int'l Joint Research / Invited
• [Presentation] Plasmoid-dominated turbulent reconnection in symmetric and asymmetric systems (2022)
  • Author(s): Zenitani, S., Yamamoto, M., and T. Miyoshi
  • Organizer: EGU General Assembly 2022
  • Int'l Joint Research
• [Presentation] Plasmoid-dominated turbulent reconnection in symmetric and asymmetric systems (2022)
  • Author(s): Zenitani, S., Yamamoto, M., and T. Miyoshi
  • Organizer: AOGS 19th Annual Meeting
  • Int'l Joint Research
• [Presentation] 磁気リコネクションにおけるプラズマ粒子軌道研究の進展 (2022)
  • Author(s): 銭谷誠司
  • Organizer: プラズマ・核融合学会
  • Invited
• [Presentation] プラズマ粒子シミュレーションのための相対論的カッパ分布の乱数生成法 (2022)
  • Author(s): 銭谷誠司、中野慎也
  • Organizer: 第152回地球電磁気・地球惑星圏学会講演会
• [Presentation] A plasma activation function for deep neural networks (2022)
  • Author(s): 銭谷誠司
  • Organizer: 第152回地球電磁気・地球惑星圏学会講演会
• [Presentation] Connecting Injection and Subsequent Acceleration of Nonthermal Electrons at Collisionless Oblique Shocks (2021)
  • Author(s): Amano, T.
  • Organizer: The 30th International Toki Conference on Plasma and Fusion Research (ITC30)
  • Int'l Joint Research / Invited
• [Presentation] Stochastic Shock Drift Acceleration as the Mechanism for Electron Injection into Diffusive Shock Acceleration at Collisionless Shocks (2021)
  • Author(s): Amano, T.
  • Organizer: 5th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2021)
  • Int'l Joint Research / Invited
• [Presentation] Particle Acceleration at Collisionless Shocks (2021)
  • Author(s): Amano, T.
  • Organizer: 10th East-Asia Workshop on Laboratory, Space, Astrophysical Plasmas (EASW-10)
  • Int'l Joint Research / Invited
• [Presentation] Perspectives for Electron Heating and Acceleration at Collisionless Shocks (2021)
  • Author(s): Amano, T.
  • Organizer: MMS Spring 2021 Science Working Team Meeting
  • Int'l Joint Research / Invited
• [Presentation] ミクロなプラズマ素過程に基づく衝撃波粒子加速機構 (2021)
  • Author(s): 天野孝伸
  • Organizer: 高エネルギー現象で探る宇宙の多様性Ⅰ
  • Invited
• [Presentation] Condition for Electron Injection via Stochastic Shock Drift Acceleration (2021)
  • Author(s): 天野孝伸
  • Organizer: 第150回地球電磁気・地球惑星圏学会講演会
• [Presentation] Combining Diffusive Shock Acceleration and Stochastic Shock Drift Acceleration Theory (2021)
  • Author(s): 天野孝伸
  • Organizer: Japan Geoscience Union Meeting 2021
• [Presentation] Simulation on energetic electron precipitation induced by whistler mode chorus emissions in the outer radiation belt (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: American Geophysical Union 2021 Fall Meeting
  • Int'l Joint Research
• [Presentation] Role of nonlinear WPI in energetic electron precipitation by oblique chorus emissions in the outer radiation belt (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: 第150回地球電磁気・地球惑星圏学会
• [Presentation] Modeling of energetic electron precipitation affected by oblique whistler mode chorus emissions in the outer radiation belt (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: The XXXIV General Assembly and Scientific Symposium of the International Union of Radio Science
  • Int'l Joint Research
• [Presentation] Energetic electron fluxes and precipitation at outer radiation belt associated with localized oblique whistler mode chorus emissions (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: Asia Oceania Geosciences Society 18th Annual Meeting
  • Int'l Joint Research / Invited
• [Presentation] Modeling of outer radiation belt electron dynamics associated with whistler mode chorus emissions via Green’s function method (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: Japan Geoscience Union Meeting 2021
  • Int'l Joint Research
• [Presentation] Energetic electron precipitation via oblique whistler mode chorus emissions in the outer radiation belt (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: The General Assembly 2021 of the European Geosciences Union
  • Int'l Joint Research
• [Presentation] Precipitation process of electrons in the outer radiation belt associated with oblique whistler mode chorus emissions (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: Joint Scientific Assembly IAGA-IASPEI 2021
  • Int'l Joint Research
• [Presentation] Simulation on energetic electron precipitation induced by oblique chorus emissions (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: STEシミュレーション研究会・KDKシンポジウム
• [Presentation] Relation between microburst precipitation of energetic electrons and oblique whistler mode wave-particle interactions (2021)
  • Author(s): Hsieh, Y.-K., & Omura, Y.
  • Organizer: 脈動オーロラ研究集会
• [Presentation] Nonlinear Wave Growth Process of Whistler-mode Chorus Emissions in the Earth’s Magnetosphere (2021)
  • Author(s): Omura, Y.
  • Organizer: American Geophysical Union 2021 Fall Meeting
  • Int'l Joint Research / Invited
• [Presentation] ホイッスラーモード・ライジングトーン波の非線形絶対不安定性の必要条件 (2021)
  • Author(s): 大村善治, 野儀 武志
  • Organizer: 第150回地球電磁気・地球惑星圏学会講演会
• [Presentation] One-dimensional simulation of triggered rising-tone emissions with subpacket structure (2021)
  • Author(s): Omura, Y.
  • Organizer: The XXXIV General Assembly and Scientific Symposium of the International Union of Radio Science
  • Int'l Joint Research
• [Presentation] Nonlinear Wave Growth Processes of Whistler-mode Chorus and Hiss Emissions in the Earth’s Magnetosphere (2021)
  • Author(s): Omura, Y.
  • Organizer: 5th Asia Pacific Conference on Plasma Physics, Division of Plasma Physics, Association of Asia Pacific Physical Societies
  • Int'l Joint Research
• [Presentation] Multiple Boris solvers for particle-in-cell (PIC) simulation (2021)
  • Author(s): Zenitani, S., & Kato, T.N.
  • Organizer: EGU General Assembly 2021
• [Presentation] 非相対論的プラズマ粒子シミュレーションのための全多重 Buneman-Boris 数値解法 (2021)
  • Author(s): 銭谷誠司、加藤恒彦
  • Organizer: Japan Geoscience Union Meeting 2021
• [Presentation] Particle dynamics and nongyrotropic velocity distribution functions in magnetic reconnection (2021)
  • Author(s): Zenitani, S.
  • Organizer: International Workshop on Magnetic Reconnection 2021
  • Int'l Joint Research / Invited
• [Presentation] プラズモイド型乱流磁気リコネクションのMHDシミュレーション研究 (2021)
  • Author(s): 銭谷誠司、三好隆博
  • Organizer: プラズマシミュレーターシンポジウム 2021
  • Invited
• [Presentation] プラズマ粒子シミュレーションのための全多重Boris解法の提案 (2021)
  • Author(s): 銭谷誠司、加藤恒彦
  • Organizer: 第38回プラズマ・核融合学会年会
• [Book] Generalized Quasi-Neutral Hybrid-Kinetic Simulations, In J. Buechner (Ed.), Space and Astrophysical Plasma Simulation (Chapter 10, pp. 313-336) (2022)
  • Author(s): Takanobu Amano
  • Total Pages: 426
  • Publisher: Springer Nature
  • ISBN: 978-3-031-11869-2
• [Remarks] 宇宙プラズマ中の電磁サイクロトロン波 による電子加速散乱機構の実証的研究: PCWAVE
  • URL: http://pcwave.rish.kyoto-u.ac.jp/
• [Funded Workshop] Future Perspective of Study on Nonlinear Wave-Particle Interaction (2023)