Loss of the Rarefaction Wave during Plasma Sheet Thinning

DOI Web Site 参考文献11件
  • TRETLER Rudolf
    Department of Communication Engineering and Informatics, University of Electro-Communications
  • TATSUNO Tomo
    Department of Computer and Network Engineering, University of Electro-Communications
  • HOSOKAWA Keisuke
    Department of Computer and Network Engineering, University of Electro-Communications

抄録

<p>A one-dimensional model for plasma sheet thinning [J. K. Chao et al., Planet. Space Sci. 25, 703 (1977)] according to the Current Disruption (CD) model of auroral breakup is extended to two dimensions. An initial disturbance generates a rarefaction wave. In the 1D model the rarefaction wave propagates tailward at sound velocity, which is regarded as a signature of the thinning. However, in the MHD simulation of the 2D model the rarefaction wave is quickly lost in the plasma sheet recompression, while the thinning continues propagating at a slower velocity. This shows that the dynamics of plasma sheet thinning may be dominated by sheet-lobe interactions that are absent from the 1D model.</p>

収録刊行物

  • Plasma and Fusion Research

    Plasma and Fusion Research 15 (0), 2401053-2401053, 2020-08-19

    一般社団法人 プラズマ・核融合学会

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