Studies on electron accelerations at high-Mach number collisionless shocks using a Particle-in-Cell code

• Project/Area Number: 23840047
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Chiba University
• Principal Investigator: MATSUMOTO Yosuke 千葉大学, 大学院・理学研究科, 特任助教 (20397475)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 宇宙線 / 衝撃波 / 粒子加速 / 大規模計算 / PIC計算 / 宇宙物理 / 計算物理 / プラズマ・核融合

Research Abstract

Large-scale 2D PIC simulations of collision-less shocks reveal that electrons are effectively accelerated by the electron shock surfing acceleration mechanism with using a large ion-to-electron mass ratio in a very-high Alfven Mach number regime. The results imply that electrons can be accelerated effectively to relativistic energies at supernova remnant shocks.

Research Products

• [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
• [Presentation] 超高マッハ数衝撃波におけるプラズマ不安定性と電子加速 (2013)
  • Author(s): 松本洋介
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
  • Year and Date: 2013-03-29
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensional Particle-in-Cell simulations invarious parameter regimes (2012)
  • Author(s): Y. Matsumoto
  • Organizer: AGU Fall meeting
  • Place of Presentation: USA
  • Year and Date: 2012-12-05
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensional Particle-in-Cell simulations onmassively parallel supercomputer systems (2012)
  • Author(s): Y. Matsumoto
  • Organizer: EANAM 2012
  • Place of Presentation: Kyoto Univ
  • Year and Date: 2012-11-02
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensional Particle-in-Cell simulations onmassively parallel supercomputer systems (2012)
  • Author(s): Y. Matsumoto
  • Organizer: CCP2012
  • Place of Presentation: Kobe
  • Year and Date: 2012-10-18
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensionalParticle-in-Cell simulations onmassively parallel supercomputer systems (2012)
  • Author(s): Y. Matsumoto
  • Organizer: JSST2012
  • Place of Presentation: Kobe
  • Year and Date: 2012-09-27
• [Presentation] 2次元超高マッハ数衝撃波におけるプラズマ不安定性 (2012)
  • Author(s): 松本洋介
  • Organizer: 日本天文学会2012年秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 2012-09-22
• [Presentation] 超並列電磁プラズマ粒子コードによる高マッハ数衝撃波における電子加速 (2012)
  • Author(s): 松本洋介
  • Organizer: 地球惑星関連学会2012年合同大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2012-05-22
• [Presentation] 超並列電磁プラズマ粒子コードによる高マッハ数無衝突衝撃波における電子加速 (2012)
  • Author(s): 松本洋介
  • Organizer: 日本天文学会2012年春季大会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-22
• [Presentation] 超並列電磁プラズマ粒子コードによる高マッハ数無衝突衝撃波における電子加速 (2012)
  • Author(s): 松本洋介、天野孝伸、星野真弘
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学(京都)
  • Year and Date: 2012-03-22
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensional Particle-in-Cell simulations on massively parallel supercomputer systems (2012)
  • Author(s): Yosuke Matsumoto
  • Organizer: JSST2012 International Conference on Simulation Technology
  • Place of Presentation: Port Island, Kobe
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensional Particle-in-Cell simulations on massively parallel supercomputer systems (2012)
  • Author(s): Yosuke Matsumoto
  • Organizer: Conference on Computational Physics
  • Place of Presentation: Nichii Gakkan, Kobe
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensional Particle-in-Cell simulations on massively parallel supercomputer systems (2012)
  • Author(s): Yosuke Matsumoto
  • Organizer: East Asia Numerical Astrophysics Meeting
  • Place of Presentation: Kyoto University, Kyoto
• [Presentation] Electron accelerations at high Mach number shocks: Two-dimensional Particle-in-Cell simulations in various parameter regimes (2012)
  • Author(s): Yosuke Matsumoto
  • Organizer: AGU Fall meeting
  • Place of Presentation: San Francisco, USA
• [Presentation] 超並列版電磁プラズマ粒子コードによる高マッハ数無衝突衝撃波における電子加速 (2011)
  • Author(s): 松本洋介
  • Organizer: Plasma Conference 2011
  • Place of Presentation: 石川県立音楽堂
  • Year and Date: 2011-11-22
• [Presentation] 超並列版電磁プラズマ粒子コードによる高マッハ数無衝突衝撃波における電子加速 (2011)
  • Author(s): 松本洋介、星野真弘
  • Organizer: Plasma conference 2011
  • Place of Presentation: 石川県立音楽堂(石川)
  • Year and Date: 2011-11-22