Study on transportation/acceleration process of relativistic electrons by multi-scale radiation belt simulations

2014 Fiscal Year Final Research Report

• Project/Area Number: 23340146
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Space and upper atmospheric physics
• Research Institution: Nagoya University
• Principal Investigator: YOSHIZUMI Miyoshi 名古屋大学, 太陽地球環境研究所, 准教授 (10377781)
• Co-Investigator(Kenkyū-buntansha): SAITO Shinji 名古屋大学, 大学院理学研究科, 特任准教授 (60528165)
• Co-Investigator(Renkei-kenkyūsha): SEKI Kanako 名古屋大学, 太陽地球環境研究所, 准教授 (20345854) ; MATSUMOTO Yosuke 千葉大学, 大学院理学研究科, 特任助教 (20397475) ; AMANO Takanobu 東京大学, 大学院理学系研究科, 助教 (00514853)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 放射線帯 / 粒子輸送 / 粒子加速 / シミュレーション

Outline of Final Research Achievements

We have newly developed simulation codes to investigate global variations of energetic electrons of the outer belt considering wave-particle interactions. As a result, we found that the whistler chorus waves can cause wide energy electron precipitations from a few keV to MeV simultaneously, which are confirmed by observations. Moreover, we found that the MHD mode waves can resonate with the drifting electrons and the prompt accelerations of MeV electrons are found associated with the solar wind pressure pulse.

Free Research Field

磁気圏物理学