transitionregionexplosiveeventsproducedbyplasmoidinstability

	transitionregionexplosiveeventsproducedbyplasmoidinstability
	Li Dong
刊名	researchinastronomyandastrophysics
	2019
卷号	19 期号:5
ISSN号	1674-4527
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.
语种	英语
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/31971]
专题	中国科学院紫金山天文台
作者单位	中国科学院紫金山天文台
推荐引用方式 GB/T 7714	Li Dong. transitionregionexplosiveeventsproducedbyplasmoidinstability[J]. researchinastronomyandastrophysics,2019,19(5).
APA	Li Dong.(2019).transitionregionexplosiveeventsproducedbyplasmoidinstability.researchinastronomyandastrophysics,19(5).
MLA	Li Dong."transitionregionexplosiveeventsproducedbyplasmoidinstability".researchinastronomyandastrophysics 19.5(2019).