Plasmoid-dominated Turbulent Reconnection in a Low-β Plasma

• 銭谷, 誠司

• Miyoshi, Takahiro

抄録

Properties of plasmoid-dominated turbulent reconnection in a low-β background plasma are investigated by resistive magnetohydrodynamic (MHD) simulations. In the βin<1 regime, where βin is plasma β in the inflow region, the reconnection site is dominated by shocks and shock-related structures and plasma compression is significant. The effective reconnection rate increases from 0.01 to 0.02 as βin decreases. We hypothesize that plasma compression allows a faster reconnection rate, and then we estimate a speed-up factor, based on a compressible MHD theory. We validate our prediction by a series of MHD simulations. These results suggest that the plasmoid-dominated reconnection can be twice as fast as expected in the β≪1 environment in a solar corona.

収録刊行物

• Astrophysical Journal Letters

  Astrophysical Journal Letters 894 (1), L7-L7, 2020-05-01

  American Astronomical Society

詳細情報

• CRID: 1050012570392559232
• NII論文ID: 120006841700
• ISSN: 20418213
• ISSN: 20418205
• HANDLE: 20.500.14094/90007073
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
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  • CiNii Articles