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Numerical experiments on magnetic reconnection in solar flare and coronal mass ejection current sheets
Mei ZX(梅志星)1,2; Shen CC(沈呈彩)1,2,3; Wu, N4; Lin J(林隽)1,3; Murphy, NA3; Ilia I. Roussev1,5
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2012-10
卷号425期号:4页码:2824-2839
DOI10.1111/j.1365-2966.2012.21625.x
产权排序第1完成单位
收录类别SCI ; EI
关键词Instabilities Magnetic Reconnection Shock Waves Turbulence Sun: Coronal Mass Ejections (Cmes) Sun: Flares
摘要

Magnetic reconnection plays a critical role in energy conversion during solar eruptions. This paper presents a set of magnetohydrodynamic experiments for the magnetic reconnection process in a current sheet (CS) formed in the wake of the rising flux rope. The eruption results from the loss of equilibrium in a magnetic configuration that includes a current-carrying flux rope, representing a pre-existing filament. In order to study the fine structure and micro processes inside the CS, mesh refinement is used to reduce the numerical diffusion. We start with a uniform, explicitly defined resistivity which results in a Lundquist number S = 10(4) in the vicinity of CS. The use of mesh refinement allows the simulation to capture high-resolution features such as plasmoids from the tearing mode and plasmoid instability regions of turbulence and slow-mode shocks. Inside the CS, magnetic reconnection goes through the Sweet-Parker and the fractal stages, and eventually displays a time-dependent Petschek pattern. Our results support the concept of fractal reconnection suggested by Shibata et al. and Shibata & Tanuma, and also suggest that the CS evolves through Sweet-Parker reconnection prior to the fast reconnection stage. For the first time, the detailed features and/or fine structures inside the coronal mass ejection/flare CS in the eruption were investigated in this work.

资助项目Program 973 grant[2011CB811403] ; NSFC[10873030] ; CAS[2011T2J01] ; CAS[2010Y2JB16] ; CAS[KJCX2-EW-T07] ; NASA[NNX11AB61G] ; NSF SHINE grant[AGS-1156076]
项目资助者Program 973 grant[2011CB811403] ; NSFC[10873030] ; CAS[2011T2J01, 2010Y2JB16, KJCX2-EW-T07] ; NASA[NNX11AB61G] ; NSF SHINE grant[AGS-1156076]
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
归档日期2012-10-07
WOS记录号WOS:000318270500018
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]PLASMOID-INDUCED-RECONNECTION ; SUPRA-ARCADE DOWNFLOWS ; X-RAY ; CATASTROPHE MODEL ; TRANSPORT SCHEME ; ERUPTIVE FLARES ; FLUX-ROPE ; CME-FLARE ; SIMULATION ; FIELD
EI入藏号20221612003087
EI主题词Turbulence
EI分类号525.5 Energy Conversion Issues - 615.3 Magnetohydrodynamics (MHD) Power Generation - 723.5 Computer Applications - 921 Mathematics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 931 Classical Physics ; Quantum Theory ; Relativity - 931.3 Atomic and Molecular Physics
引用统计
被引频次:81[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6193
专题太阳物理研究组
通讯作者Mei ZX(梅志星)
作者单位1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan, 650011, China
2.Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
3.Harvard–Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA, 02138, USA
4.School of Tourism and Geography, Yunnan Normal University, Kunming, Yunnan, 650031, China
5.Institute for Astronomy, University of Hawaii, 2680 Woodlawn Dr, Honolulu, HI, 96822, USA
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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GB/T 7714
Mei ZX,Shen CC,Wu, N,et al. Numerical experiments on magnetic reconnection in solar flare and coronal mass ejection current sheets[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,425(4):2824-2839.
APA Mei ZX,Shen CC,Wu, N,Lin J,Murphy, NA,&Ilia I. Roussev.(2012).Numerical experiments on magnetic reconnection in solar flare and coronal mass ejection current sheets.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,425(4),2824-2839.
MLA Mei ZX,et al."Numerical experiments on magnetic reconnection in solar flare and coronal mass ejection current sheets".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 425.4(2012):2824-2839.
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