On large-amplitude electric field fluctuation observed in magnetotail reconnection sites

• Project/Area Number: 21540464
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Space and upper atmospheric physics
• Research Institution: Japan Aerospace Exploration Agency
• Principal Investigator: SHINOHARA Iku 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 准教授 (20301723)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 宇宙プラズマ / 磁気リコネクション / 大振幅電場 / 大振幅電場擾乱 / 粒子シミュレーション / プラズマ電場計測

Research Abstract

The generating mechanism of large-amplitude(tens of mV/m) electric field fluctuation observed in magnetotail reconnection sites has been investigated by using results of observational data analysis and numerical simulations synthetically. The results strongly suggest that the emerging region of the large-amplitude electric field fluctuation is downstream far from the diffusion region of magnetic reconnection. Since the generating mechanism has been thought to be strongly related with the plasma dynamics in the diffusion region, we have to reconsider the physical meaning of the large-amplitude electric field fluctuation.

Research Products

• [Journal Article] Construction of magnetic reconnection in the near-Earth magnetotail with Geotail (2011)
  • Author(s): Nagai, T., I. Shinohara, M. Fujimoto, A. Matsuoka, Y. Saito, and T. Mukai
  • Journal Title: J. Geophys. Res. Volume: 116(4) Issue: A4 Pages: n/a-n/a
  • DOI: 10.1029/2010ja016283
  • Peer Reviewed
• [Journal Article] Reconnection and waves : A review with a perspective (2011)
  • Author(s): Fujimoto, M., H. Kojima, and I. Shinohara
  • Journal Title: Space Sci. Rev. Volume: 160(1-4) Issue: 1-4 Pages: 123-143
  • DOI: 10.1007/s11214-011-9807-7
  • Peer Reviewed
• [Journal Article] Evaluation of Electric Field Probe Onboard Spacecraft Using a 3D Full PIC Simulation (2009)
  • Author(s): Muranaka, T. H. O. Ueda, H. Usui, and I. Shinohara
  • Journal Title: TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, SPACE TECHNOLOGY JAPAN Volume: 7 Issue: ists26 Pages: Pr_2_19-Pr_2_24
  • DOI: 10.2322/tstj.7.Pr_2_19
  • NAID: 130000151854
  • ISSN: 1347-3840
  • Peer Reviewed
• [Journal Article] Evaluation of Electric Field Probe Onboard Spacecraft Using a 3D Full PIC Simulation (2009)
  • Author(s): 村中崇信, 上田裕子, 臼井英之, 篠原育
  • Journal Title: Transactions of JSASS Space Technology Japan Vol.7
  • NAID: 130000151854
  • Peer Reviewed
• [Presentation] Wave activity around the X-line observed in May 15, 2003 event (2011)
  • Author(s): Shinohara, I., H. Kojima, T. Nagai, and M. Fujimoto
  • Organizer: IKI workshop : Magnetotail current sheets
  • Place of Presentation: モスクワ
  • Year and Date: 2011-09-28
• [Presentation] 磁気圏で観測される磁場の乱れとプラズマの輸送 (2010)
  • Author(s): 篠原育,井筒智彦,長谷川洋,藤本正樹,長井嗣信
  • Organizer: 物理学会シンポジウム「プラズマ中の磁場の乱れの発生と消滅」
  • Place of Presentation: 大阪
  • Year and Date: 2010-09-25
• [Presentation] 磁気圏で観測される磁場の乱れとプラズマの輸送 (2010)
  • Author(s): 篠原育, 他4名
  • Organizer: 物理学会シンポジウム「プラズマ中の磁場の乱れの発生と消滅」
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-25
• [Presentation] 大規模粒子シミュレーションから見えてきた宇宙空間プラズマ中のスケール間結合 (2010)
  • Author(s): 篠原育
  • Organizer: 日本地球惑星科学2010連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2010-05-26
• [Presentation] 大規模粒子シミュレーションから見えてきた宇宙空間プラズマ中のスケール間結合 (2010)
  • Author(s): 篠原育
  • Organizer: 日本地球惑星科学2010連合大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2010-05-26
• [Presentation] 3次元full-PICシミュレーションによる宇宙機環境解析 (2009)
  • Author(s): 村中崇信,上田裕子,臼井英之,篠原育
  • Organizer: 日本航空宇宙学会第40期講演会
  • Place of Presentation: 調布
  • Year and Date: 2009-04-09
• [Presentation] 3次元full-PICシミュレーションによる宇宙機環境解析 (2009)
  • Author(s): 村中崇信, 上田裕子, 臼井英之, 篠原育
  • Organizer: 日本航空宇宙学会第40期講演会
  • Place of Presentation: 宇宙航空研究開発機構 調布航空宇宙センター(東京都)
  • Year and Date: 2009-04-09