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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; Mei, Z (reprint author), Chinese Acad Sci, Yunnan Astron Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
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
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.
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Astronomy & Astrophysics
文章类型Article
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
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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, Z (reprint author), Chinese Acad Sci, Yunnan Astron Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
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
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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.,...&Mei, Z .(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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