Large-Scale Particle Simulations on Spacecraft Interactions with Extreme Space Plasma Environment

• Project/Area Number: 25870421
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Space and upper atmospheric physics; Plasma science
• Research Institution: Kobe University
• Principal Investigator: MIYAKE Yohei 神戸大学, 大学院システム情報学研究科, 助教 (50547396)
• Research Collaborator: USUI Hideyuki 神戸大学, 大学院システム情報学研究科, 教授 (10243081)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 衛星プラズマ相互作用 / 宇宙プラズマ / 衛星帯電 / 太陽コロナプラズマ / プラズマ粒子シミュレーション / 衛星電場計測 / 宇宙飛翔体プラズマ相互作用 / 太陽コロナ環境

Outline of Final Research Achievements

We study the scientific spacecraft interactions with near-Sun plasma environment via three-dimensional electromagnetic plasma particles simulations. The major results of the present study are summarized as below, and the obtained knowledge is applicable to future scientific spacecraft design. 1. Although a large flux of photoelectrons is emitted from s spacecraft, the spacecraft in near-Sun environment charges negatively due to space-charge effects associated with the emitted electrons. 2. The photoelectron distribution shows clear asymmetry near the spacecraft due to an ambient electric field associated with the plasma convection. This environmental asymmetry results in an intense spurious electric field of 100 mV/m. 3. The large flux of photoelectrons causes local magnetic perturbation around the spacecraft, which is in the order of a few nT.

Research Products

• [Journal Article] Cross-comparison of spacecraft-environment interaction model predictions applied to Solar Probe Plus near perihelion (2014)
  • Author(s): Marchand, R., Y. Miyake, H. Usui, J. Deca, G. Lapenta, J. C. Matéo-Vélez, R. E. Ergun, A. Sturner, V. Génot, A. Hilgers, and S. Markidis
  • Journal Title: Physics of Plasmas Volume: 21 Issue: 6 Pages: 062901-062901
  • DOI: 10.1063/1.4882439
  • Peer Reviewed
• [Presentation] Photoelectron and Secondary Electron Dynamics Around the Solar Probe Plus Spacecraft (2014)
  • Author(s): Miyake. Y., and H. Usui
  • Organizer: AGU Fall Meeting
  • Place of Presentation: Moscone Center, San Francisco, USA
  • Year and Date: 2014-12-16
• [Presentation] 人工衛星・宇宙プラズマ相互作用の大規模粒子シミュレーション研究 (2014)
  • Author(s): 三宅洋平
  • Organizer: 航空宇宙学会関西支部第448回航空懇談会
  • Place of Presentation: 神戸大学工学部本館, 神戸市
  • Year and Date: 2014-09-26
  • Invited
• [Presentation] Particle Simulations of Spacecraft-Plasma Interactions and Their Effects on Electric Field Measurements (2014)
  • Author(s): Miyake, Y., and H. Usui
  • Organizer: AOGS 11th Annual Meeting
  • Place of Presentation: ロイトン札幌, 札幌市
  • Year and Date: 2014-07-29
• [Presentation] 科学衛星と宇宙プラズマの電磁的相互作用に関する大規模粒子シミュレーション (2014)
  • Author(s): 三宅洋平
  • Organizer: PLASMA2014
  • Place of Presentation: 新潟
  • Invited
• [Presentation] Electromagnetic Full-Particle Simulations on Spacecraft Interaction with Near-Sun Plasma Environment (2014)
  • Author(s): Miyake, Y.
  • Organizer: 13th Spacecraft Charging Technology Conference (SCTC)
  • Place of Presentation: Pasadena, USA
• [Presentation] Electromagnetic Plasma Particle Simulations on Solar Probe Plus Spacecraft Interaction with Near-Sun Plasma Environment (2014)
  • Author(s): Miyake, Y.
  • Organizer: 40th COSPAR Scientific Assembly
  • Place of Presentation: Moscow, Russia
• [Presentation] Particle Simulations of Electromagnetic Environment around Scientific Spacecraft (2013)
  • Author(s): Miyake, Y.
  • Organizer: 11th International School/Symposium for Space Simulations (ISSS11)
  • Place of Presentation: Jhongli, Taiwan
  • Invited
• [Presentation] Full Particle Simulations on Space Plasma Interactions with Scientific Satellite (2013)
  • Author(s): Miyake, Y.
  • Organizer: 2013 Asia-Pacific Radio Science Conference (AP-RASC)
  • Place of Presentation: Taipei, Taiwan
  • Invited
• [Presentation] 太陽探査衛星・プラズマ間相互作用に関する国際共同研究 (2013)
  • Author(s): 三宅洋平
  • Organizer: 日本地球惑星科学連合2013年連合大会
  • Place of Presentation: 幕張、千葉
• [Presentation] 太陽コロナプラズマと科学衛星の相互作用に関する粒子シミュレーション (2013)
  • Author(s): 三宅洋平
  • Organizer: 地球電磁気・地球惑星圏学会2013年総会および講演会
  • Place of Presentation: 高知
• [Remarks] 神戸大学大学院システム情報学研究科計算科学専攻・臼井研究室サイト内「研究トピックス」
  • URL: http://www.lab.kobe-u.ac.jp/csi-usui/contents.html
• [Remarks] 神戸大学大学院システム情報学研究科計算科学専攻・臼井研究グループサイト内「研究トピックス」
  • URL: http://www.lab.kobe-u.ac.jp/csi-usui/contents.html