Study of Quiet Auroral Arc Formation with Macro-Micro Interlocked Simulations

• HASEGAWA Hiroki

  Japan Agency for Marine-Earth Science and Technology

• SUGIYAMA Tooru

  Japan Agency for Marine-Earth Science and Technology

• KAGEYAMA Akira

  Japan Agency for Marine-Earth Science and Technology

• HIROSE Shigenobu

  Japan Agency for Marine-Earth Science and Technology

• KUSANO Kanya

  Japan Agency for Marine-Earth Science and Technology

• WATANABE Kunihiko

  Japan Agency for Marine-Earth Science and Technology

• SATO Tetsuya

  Japan Agency for Marine-Earth Science and Technology

Bibliographic Information

Other Title

• 連結階層シミュレーションによる静穏時オーロラアークの研究

Abstract

The physics of quiet auroral arcs formation has been studied with Macro-Micro Interlocked (MMI) simulations. In the macro part of our simulation code, the macroscopic instability between the magnetosphere and ionosphere is described by the magneto-hydro-dynamics (MHD) model. On the other hand, in the micro part, the microscopic instability is calculated by the particle-in-cell (PIC) model. In the MHD simulation, it is shown that longitudinally striated structures of the field-aligned current are formed by an ionospheric feedback instability[1]. Further, the emission of aurora arc is obtained from the energy spectrum of accelerated electrons with the PIC simulation. <BR> <BR> [1] T. Sato, J. Geophys. Res., 83, 1042, 1978.

Journal

• NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan

  NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan 57 (0), 214-214, 2008

  National Committee for IUTAM

Keywords

• Macro-Micro Interlocked Simulation
• Aurora
• Magnetosphere-Ionosphere Coupling
• Feedback Instability
• Particle Acceleration

Details

• CRID: 1390001205592182656
• NII Article ID: 130004604012
• DOI: 10.11345/japannctam.57.0.214.0
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed