Transition-region explosive events produced by plasmoid instability

doi:10.1088/1674-4527/19/5/67

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	Transition-region explosive events produced by plasmoid instability
	Li, Dong 1,2
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2019-05-01
卷号	19 期号:5 页码:10
关键词	Sun: transition region line: profiles methods: numerical magnetohydrodynamics (MHD)
ISSN号	1674-4527
DOI	10.1088/1674-4527/19/5/67
英文摘要	Magnetic reconnection is thought to be a key process in most solar eruptions. Thanks to high-resolution observations and simulations, the studied scale of the reconnection process has become smaller and smaller. Spectroscopic observations show that the reconnection site can be very small, which always exhibits a bright core and two extended wings with fast speeds, i.e., transition-region explosive events. In this paper, using the PLUTO code, we perform a 2-D magnetohydrodynamic simulation to investigate small-scale reconnection in double current sheets. Based on our simulation results, such as the line-of-sight velocity, number density and plasma temperature, we can synthesize the line profile of Si IV 1402.77 angstrom which is a well known emission line used to study transition-region explosive events on the Sun. The synthetic line profile of Si IV 1402.77 angstrom is complex with a bright core and two broad wings which can extend to nearly 200 kms(-1). Our simulation results suggest that the transition-region explosive events on the Sun are produced by plasmoid instability during small-scale magnetic reconnection.
资助项目	National Natural Science Foundation of China[11603077] ; National Natural Science Foundation of China[11573072] ; National Natural Science Foundation of China[11790302] ; National Natural Science Foundation of China[11333009] ; National Natural Science Foundation of China[U1731241] ; National Natural Science Foundation of China[KLSA201708] ; Youth Fund of Jiangsu[BK20161095] ; Youth Fund of Jiangsu[BK20171108] ; Strategic Priority Research Program on Space Science, CAS[XDA15052200] ; Strategic Priority Research Program on Space Science, CAS[XDA15320301] ; Strategic Priority Research Program on Space Science, CAS[2010DP173032]
WOS关键词	MAGNETIC RECONNECTION ; SOLAR CHROMOSPHERE ; QUIET SUN ; PARTICLE-ACCELERATION ; BRIGHT POINTS ; PLUTO CODE ; ERUPTION ; FLARE ; JETS ; ENERGETICS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000467595300005
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26183]
专题	中国科学院国家天文台
通讯作者	Li, Dong
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210034, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Li, Dong. Transition-region explosive events produced by plasmoid instability[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(5):10.
APA	Li, Dong.(2019).Transition-region explosive events produced by plasmoid instability.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(5),10.
MLA	Li, Dong."Transition-region explosive events produced by plasmoid instability".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.5(2019):10.