Particle acceleration and magnetic field amplification at cosmic-ray modified shocks

• Project/Area Number: 22740118
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: The University of Tokyo (2012); Nagoya University (2010-2011)
• Principal Investigator: AMANO Takanobu 東京大学, 大学院・理学系研究科, 助教 (00514853)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 宇宙線 / プラズマ / 衝撃波 / 粒子加速 / 超新星残骸 / 磁場

Research Abstract

We have discussed the nonlinear feedback of cosmic rays in connection with the injection problem. By using numerical simulations and theoretical analysis, we have proposed a new injection model that can explain existing observations very well. We have also studied the stability of the cosmic ray modified shocks. In addition, we have found that a novel modified shock forms due to intense electromagnetic waves in a relativistic shock.

Research Products

• [Journal Article] The Role of Superluminal Electromagnetic Waves in Pulsar Wind Termination Shocks (2013)
  • Author(s): Amano, T., Kirk, J.G
  • Journal Title: Astrophys. J. Volume: 770 Pages: 18-18
  • Peer Reviewed
• [Journal Article] Multi-moment advection scheme in three dimension for Vlasov simulations of magnetized plasma (2013)
  • Author(s): Minoshima, T., Matsumoto, Y., Amano, T
  • Journal Title: J. Comput. Phys Volume: 236 Pages: 81-95
  • Peer Reviewed
• [Journal Article] Multi-moment advection scheme in three dimension for Vlasov simulations of magnetized plasma (2013)
  • Author(s): Minoshima, T., Matsumoto, Y., Amano, T.
  • Journal Title: Journal of Computational Physics Volume: 236 Pages: 81-95
  • DOI: 10.1016/j.jcp.2012.11.024
  • Peer Reviewed
• [Journal Article] The Role of Superluminal Electromagnetic Waves in Pulsar Wind Termination Shocks (2013)
  • Author(s): Amano, T., Kirk, J. G.
  • Journal Title: The Astrophysical Journal Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Electron Accelerations at High Mach Number Shocks: Two-Dimensional Particle-in-Cell Simulations inVarious Parameter Regimes (2012)
  • Author(s): Matsumoto, Y., Amano, T., Hoshino, M
  • Journal Title: Astrophys. J Volume: 755 Pages: 109-109
  • Peer Reviewed
• [Journal Article] A Numerical Electromagnetic Linear Dispersion Relation for Maxwellian Ring-Beam Velocity Distributions (2012)
  • Author(s): Umeda, T., Matsukiyo, S., Amano, T., Miyoshi, Y
  • Journal Title: Phys. Plasmas Volume: 19 Pages: 72107-72107
  • Peer Reviewed
• [Journal Article] Recent Progress in the Theory of Electron Injection in Collisionless Shocks (2012)
  • Author(s): Amano, T., Hoshino, M
  • Journal Title: Astrophys. Space Sci. Proc Volume: 33 Pages: 143-152
  • Peer Reviewed
• [Journal Article] Molecular and Atomic Gas toward HESS J1745-303 in the Galactic Center: Further Support for the Hadronic Scenario (2012)
  • Author(s): Hayakawa, T., Torii, K., Enokiya, R., Amano, T., Fukui, Y
  • Journal Title: Publ. Astron. Soc. Jpn Volume: 64 Pages: 8-8
  • NAID: 10030386082
  • Peer Reviewed
• [Journal Article] Electron accelerations at high Mach number shocks:Two-dimensional particle-in-cell simulations in various parameter regimes (2012)
  • Author(s): Matsumoto, Y., T. Amano and M.Hoshino
  • Journal Title: Astrophys. J. Volume: 755,109 Issue: 2 Pages: 1-11
  • DOI: 10.1088/0004-637x/755/2/109
  • Peer Reviewed
• [Journal Article] Molecular and Atomic Gas toward HESS J1745-303 in the Galactic Center : Further Support for the Hadronic Scenario (2012)
  • Author(s): Hayakawa, T., Torii, K., Enokiya, R., Amano, T., Fukui, Y.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 64 Pages: 8-8
  • NAID: 10030386082
  • Peer Reviewed
• [Journal Article] Stochastic Acceleration of Cosmic Rays in the Central Molecular Zone of the Galaxy (2011)
  • Author(s): Amano, T., Torii, K., Hayakawa, T., Fukui, Y
  • Journal Title: Publ. Astron. Soc. Jpn Volume: 63
  • NAID: 10030385043
  • Peer Reviewed
• [Journal Article] Multi-Moment Advection Scheme for Vlasov Simulations (2011)
  • Author(s): Minoshima, T., Matsumoto, Y., Amano, T
  • Journal Title: J. Comput. Phys Volume: 230(17) Pages: 6800-6823
  • Peer Reviewed
• [Journal Article] Self-consistent Kinetic Numerical Simulation Model for Ring Current Particles in the Earth's Inner Magnetosphere (2011)
  • Author(s): Amano, T., Seki, K., Miyoshi, Y., Umeda, T., Matsumoto, Y., Ebihara, Y., Saito, S.
  • Journal Title: J. Geophys. Res Volume: 116
  • Peer Reviewed
• [Journal Article] Stochastic Acceleration of Cosmic Rays in the Central Molecular Zone of the Galaxy (2011)
  • Author(s): Amano, T., Torii, K., Hayakawa, T, Fukui, Y.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63
  • NAID: 10030385043
  • Peer Reviewed
• [Journal Article] A Critical Mach Number for Electron Injection in Collisionless Shocks (2010)
  • Author(s): Amano, T., Hoshino, M
  • Journal Title: Phys. Rev. Lett Volume: 104 Pages: 181102-181102
  • Peer Reviewed
• [Journal Article] A critical Mach number for electron injection in collisionless shocks (2010)
  • Author(s): Amano, T., Hoshino, M.
  • Journal Title: Physical Review Letters Volume: 104 Pages: 181102-181102
  • Peer Reviewed
• [Journal Article] Recent Progress in the Theory of Electron Injection in Collisionless Shocks
  • Author(s): Amano, T., Hoshino, M.
  • Journal Title: Astrophysics and Space Science Proceedings Volume: (印刷中)(in press)
  • Peer Reviewed
• [Presentation] 相対論的電磁変性衝撃波の構造と電磁エネルギー散逸 (2013)
  • Author(s): 天野孝伸,J.Kirk
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
  • Year and Date: 2013-03-27
• [Presentation] Structure of Relativistic Shock Modified by Nonlinear Superluminal Waves (2013)
  • Author(s): Amano, T., Kirk, J. G.
  • Organizer: Nonlinear Waves and Chaos Workshop 9
  • Place of Presentation: La Jolla, USA
  • Year and Date: 2013-03-07
• [Presentation] 相対論的電磁変性衝撃波の構造 (2012)
  • Author(s): 天野孝伸,J.Kirk
  • Organizer: 日本地球電磁気・地球惑星圏学会講演会
  • Place of Presentation: 札幌コンベンションセンター
  • Year and Date: 2012-10-21
• [Presentation] パルサー風の終端衝撃波における電磁エネルギーの散逸 (2012)
  • Author(s): 天野孝伸,J.Kirk
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 2012-09-20
• [Presentation] 相対論的衝撃波における電磁場エネルギーの散逸 (2012)
  • Author(s): 天野孝伸,J.Kirk
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2012-05-22
• [Presentation] Self-consistent Drift-kinetic Numerical Ring-current Modeling : Five-dimensional Vlasov-Maxwell Approach (2012)
  • Author(s): Amano, T., Seki, K. Miyoshi, Y., Umeda, T., Matsumoto, Y., Ebihara, Y., Saito,S.
  • Organizer: Inner Magnetosphere Coupling II (IMC II)
  • Place of Presentation: Los Angeles, USA
  • Year and Date: 2012-03-20
• [Presentation] Self-consistent Kinetic Ring Current Modeling : The GEMSIS-RC Code (2012)
  • Author(s): Amano, T., Seki, K. Miyoshi, Y., Umeda, T., Matsumoto, Y., Ebihara, Y., Saito, S.
  • Organizer: GEMSIS International Workshop
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 2012-03-12
• [Presentation] Nonthermal Electron Acceleration and Injection in Collisionless Shocks (2011)
  • Author(s): Amano, T., Hoshino, M
  • Organizer: International Astrophysics Forum Alpbach (IAFA) 2011
  • Place of Presentation: Alpbach, Austria
  • Year and Date: 2011-06-24
• [Presentation] Nonthermal Electron Acceleration and Injection in Collisionless Shocks (2011)
  • Author(s): Amano, T., Hoshino, M.
  • Organizer: International Astrophysics Forum Alpbach (IAFA) 2011
  • Place of Presentation: Alpbach, Austria(招待講演)
  • Year and Date: 2011-06-24
• [Presentation] Kinetic and Self-consistent Numerical Modeling of the Terrestrial Inner Magnetosphere (2011)
  • Author(s): Amano, T., Seki, K. Miyoshi, Y., Umeda, T., Matsumoto, Y., Ebihara, Y., Saito, S.
  • Organizer: 6th International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM 2011)
  • Place of Presentation: Valencia, Spain
  • Year and Date: 2011-06-17
• [Presentation] イオンスケール揺らぎ存在下における電子の衝撃波ドリフト加速の効率 (2011)
  • Author(s): 天野孝伸
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2011-05-25
• [Presentation] イオンスケールの揺らぎ存在下における電子の衝撃波ドリフト加速の効率 (2011)
  • Author(s): 天野孝伸
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 千葉、幕張メッセ
  • Year and Date: 2011-05-25
• [Presentation] Development of a FullySelf-consistent Numerical Simulation Model for Ring Current Dynamics in the Inner Magnetosphere (2010)
  • Author(s): Amano, T., Seki, K., Miyoshi, Y., Umeda, T., Matsumoto, Y., Ebihara, Y., Saito, S.
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2010-12-13
• [Presentation] 揺らいだ衝撃波面におけるドリフト加速 (2010)
  • Author(s): 天野孝伸
  • Organizer: 日本地球電磁気・地球惑星圏学会講演会
  • Place of Presentation: 沖縄県市町村自治会館
  • Year and Date: 2010-11-01
• [Presentation] 揺らいだ衝撃波面におけるドリフト加速 (2010)
  • Author(s): 天野孝伸
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 沖縄・那覇
  • Year and Date: 2010-11-01
• [Presentation] Electron Acceleration and Injection by Whistler Waves in Collisionless Shocks (2010)
  • Author(s): Amano, T., Hoshino, M.
  • Organizer: 2010International Space Plasma Symposium
  • Place of Presentation: Tinan, Taiwan
  • Year and Date: 2010-06-28
• [Presentation] Electron acceleration and injection by whistler waves in collisionless shocks (2010)
  • Author(s): Amano, T., Hoshino, M.
  • Organizer: 2010 International Space Plasma Symposium
  • Place of Presentation: Tainan, Taiwan(invited talk)(招待講演)
  • Year and Date: 2010-06-28
• [Presentation] 無衝突衝撃波における電子注入の臨界マッハ数 (2010)
  • Author(s): 天野孝伸,星野真弘
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2010-05-23
• [Presentation] 無衝突衝撃波における電子注入の臨界マッハ数 (2010)
  • Author(s): 天野孝伸, 星野真弘
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 千葉・幕張
  • Year and Date: 2010-05-23
• [Presentation] 相対論的衝撃波における電磁場エネルギーの散逸
  • Author(s): 天野孝伸, Kirk J. G.
  • Organizer: 日本地球惑星科学連合2012年度連合大会
  • Place of Presentation: 千葉、幕張メッセ
• [Presentation] パルサー風の終端衝撃波における電磁エネルギー散逸
  • Author(s): 天野孝伸, Kirk J. G.
  • Organizer: 日本天文学会2012年秋季年会
  • Place of Presentation: 大分、大分大学
• [Presentation] 相対論的電磁波変性衝撃波の構造
  • Author(s): 天野孝伸, Kirk J. G.
  • Organizer: 地球電磁気・地球惑星圏学会2012年秋学会
  • Place of Presentation: 札幌、札幌コンベンションセンター
• [Presentation] Structure of Relativistic Shock Modified by Nonlinear Superluminal Waves
  • Author(s): Amano, T., Kirk, J. G.
  • Organizer: Nonlinear Waves and Chaos Workshop 9
  • Place of Presentation: USA, San Diego
  • Invited
• [Presentation] 相対論的電磁変性衝撃波の構造と電磁エネルギー散逸
  • Author(s): 天野孝伸, Kirk J. G.
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 東広島、広島大学
  • Invited