Response of the Magnetosphere to Microscopic Effects in Auroral Arc Formation

• HASEGAWA Hiroki

  National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan

• OHNO Nobuaki

  University of Hyogo, 7-1-28 Minatojimaminami-machi, Chuo-ku, Kobe 650-0047, Japan

• SATO Tetsuya

  University of Hyogo, 7-1-28 Minatojimaminami-machi, Chuo-ku, Kobe 650-0047, Japan

Abstract

A process of quiet auroral arc formation, in particular, the response of the magnetosphere to the effect of auroral energetic electrons, is studied using a holistic auroral simulation code. It consists of a three-dimensional magnetohydrodynamic code for a dipole magnetosphere-ionosphere coupling system and a one-dimensional electrostatic plasma particle code for auroral energetic electron production. Results of the holistic auroral simulation indicate that drastic variation in the ionospheric electric field, which is induced by auroral energetic electrons and propagates into the magnetosphere, influences the magnetospheric field-aligned current distribution. Furthermore, the characteristic time scale of this process is investigated.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 6 2401128-2401128, 2011

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

• aurora
• magnetosphere-ionosphere coupling
• feedback instability
• electron acceleration
• holistic simulation

Details

• CRID: 1390001205253358848
• NII Article ID: 130002059521
• DOI: 10.1585/pfr.6.2401128
• ISSN: 18806821
• HANDLE: 10655/8965
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/545
• Web Site: http://www.jstage.jst.go.jp/article/pfr/6/0/6_0_2401128/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed