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  1. H300 宇宙地球環境研究所
  2. H300a 雑誌掲載論文
  3. 学術雑誌

Mechanism of non-steady Petschek-type reconnection with uniform resistivity

http://hdl.handle.net/2237/00030543
http://hdl.handle.net/2237/00030543
98b444fc-31a0-40e8-988e-1439844f4274
名前 / ファイル ライセンス アクション
1_5084771.pdf 1_5084771 (2.7 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-07-11
タイトル
タイトル Mechanism of non-steady Petschek-type reconnection with uniform resistivity
言語 en
著者 Shibayama, Takuya

× Shibayama, Takuya

WEKO 92601

en Shibayama, Takuya

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Kusano, Kanya

× Kusano, Kanya

WEKO 92602

en Kusano, Kanya

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Miyoshi, Takahiro

× Miyoshi, Takahiro

WEKO 92603

en Miyoshi, Takahiro

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Bhattacharjee, Amitava

× Bhattacharjee, Amitava

WEKO 92604

en Bhattacharjee, Amitava

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright 2019 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in (Physics of Plasmas. v.26, n.3, 2019, p.032903) and may be found at (https://doi.org/10.1063/1.5084771).
抄録
内容記述タイプ Abstract
内容記述 The Sweet-Parker and Petschek models are well-established magnetohydrodynamics (MHD) models of steady magnetic reconnection. Recent findings on magnetic reconnection in high-Lundquist-number plasmas indicate that Sweet-Parker-type reconnection in marginally stable thin current sheets connecting plasmoids can produce fast reconnection. By contrast, it has proven difficult to achieve Petschek-type reconnection in plasmas with uniform resistivity because sustaining it requires localization of the diffusion region. However, Shibayama et al. [Phys. Plasmas 22, 100706 (2015)] recently noted that Petschek-type reconnection can be achieved spontaneously in a dynamical manner even under uniform resistivity through what they called dynamical Petschek reconnection. In this new type of reconnection, Petschek-type diffusion regions can be formed in connection with plasmoids. In this paper, we report the results of two-dimensional resistive MHD simulation with uniform resistivity, undertaken to determine the diffusion region localization mechanism under dynamical Petschek reconnection. Through this modeling, we found that the separation of the X-point from the flow stagnation point (S-point) plays a crucial role in the localization of the diffusion region because the motion of the X-point is restricted by the strong flow emanating from the flow stagnation point. This mechanism suggests that dynamical Petschek reconnection is possible even in large systems such as the solar corona.
言語 en
内容記述
内容記述タイプ Other
内容記述 ファイル公開:2020-03-25
言語 ja
出版者
出版者 AIP Publishing
言語 en
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1063/1.5084771
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 1070-664X
書誌情報 en : Physics of Plasmas

巻 26, 号 3, p. 032903, 発行日 2019-03-25
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