NUMERICAL EXPERIMENTS ON FINE STRUCTURE WITHIN RECONNECTING CURRENT SHEETS IN SOLAR FLARES

doi:10.1088/0004-637X/737/1/14

YNAO OpenIR > 太阳物理研究组

	NUMERICAL EXPERIMENTS ON FINE STRUCTURE WITHIN RECONNECTING CURRENT SHEETS IN SOLAR FLARES
	Shen CC(沈呈彩)1,2 ; Lin J(林隽)1,3 ; Murphy, NA 3; Shen, CC (reprint author), Chinese Acad Sci, Yunnan Astron Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
发表期刊	ASTROPHYSICAL JOURNAL
	2011-08-10
卷号	737 期号:1
DOI	10.1088/0004-637X/737/1/14
产权排序	第1完成单位
收录类别	SCI
关键词	Instabilities Magnetic Reconnection Magnetohydrodynamics (Mhd) Methods: Numerical Plasmas Sun: Flares
摘要	We perform resistive magnetohydrodynamic simulations to study the internal structure of current sheets that form during solar eruptions. The simulations start with a vertical current sheet in mechanical and thermal equilibrium that separates two regions of the magnetic field with opposite polarity which are line-tied at the lower boundary representing the photosphere. Reconnection commences gradually due to an initially imposed perturbation, but becomes faster when plasmoids form and produce small-scale structures inside the current sheet. These structures include magnetic islands or plasma blobs flowing in both directions along the sheet, and X-points between pairs of adjacent islands. Among these X-points, a principal one exists at which the reconnection rate reaches maximum. A fluid stagnation point (S-point) in the sheet appeared where the reconnection outflow bifurcates. The S-point and the principal X-point (PX-point) are not co-located in space though they are very close to one another. Their relative positions alternate as reconnection progresses and determine the direction of motion of individual magnetic islands. Newly formed islands move upward if the S-point is located above the PX-point, and downward if the S-point is below the PX-point. Merging of magnetic islands was observed occasionally between islands moving in the same direction. Reconnected plasma flow was observed to move faster than blobs nearby.
项目资助者	Program 973 [2011CB811403] ; NSFC [10873030] ; CAS [2009J2-34] ; NASA [NNX11AB61G] ; Smithsonian Institution
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-637X
URL	查看原文
归档日期	2011-08-01
WOS记录号	WOS:000293332200014
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	CORONAL MASS EJECTION ; FLUX-CORRECTED TRANSPORT ; MAGNETIC RECONNECTION ; 2-RIBBON FLARES ; ERUPTIONS ; LOOPS ; INFLOWS ; MOTIONS ; ARCADE ; MODEL
引用统计	被引频次：108[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/114a53/6176
专题	太阳物理研究组
通讯作者	Shen, CC (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, P.O. Box 110, Kunming, Yunnan 650011, China 2.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China 3.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Shen CC,Lin J,Murphy, NA,et al. NUMERICAL EXPERIMENTS ON FINE STRUCTURE WITHIN RECONNECTING CURRENT SHEETS IN SOLAR FLARES[J]. ASTROPHYSICAL JOURNAL,2011,737(1).
APA	Shen CC,Lin J,Murphy, NA,&Shen, CC .(2011).NUMERICAL EXPERIMENTS ON FINE STRUCTURE WITHIN RECONNECTING CURRENT SHEETS IN SOLAR FLARES.ASTROPHYSICAL JOURNAL,737(1).
MLA	Shen CC,et al."NUMERICAL EXPERIMENTS ON FINE STRUCTURE WITHIN RECONNECTING CURRENT SHEETS IN SOLAR FLARES".ASTROPHYSICAL JOURNAL 737.1(2011).

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