A Small-scale Oscillatory Reconnection and the Associated Formation and Disappearance of a Solar Flux Rope

doi:10.3847/2041-8213/ab1135

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	A Small-scale Oscillatory Reconnection and the Associated Formation and Disappearance of a Solar Flux Rope
	Xue,Zhike 1,2,3; Yan,Xiaoli 1,2; Jin,Chunlan 3; Yang,Liheng 1,2; Wang,Jincheng 1,2; Li,Qiaoling 1,2,4; Zhao,Li 1,2
刊名	The Astrophysical Journal Letters
	2019-04-03
卷号	874 期号:2
关键词	magnetic reconnection Sun: activity Sun: magnetic fields Sun: oscillations
ISSN号	2041-8205
DOI	10.3847/2041-8213/ab1135
英文摘要	Abstract We present the observations of a small-scale oscillatory reconnection for the first time and its resulting in formation and disappearance of a flux rope with the high-resolution data obtained by the New Vacuum Solar Telescope and the Solar Dynamics Observatory on 2013 July 24 and 25. This oscillatory reconnection consists of four relatively independent magnetic reconnections which last for about 48, 158, 275, and 340 minutes, respectively. The durations of the four magnetic reconnections increase with time. Four current sheets along two nearly perpendicular directions are formed alternately. The oscillatory reconnection experiences two cycles, and the periods of the two oscillations are 206 and 615 minutes, which are much longer than the previous results. The period of the first oscillation is shorter than that of the second oscillation. Furthermore, a flux rope forms during the second magnetic reconnection. Its twist increases with the reconnection and transfers from the reconnection site to one leg, and this leads the flux rope to become more slender. Then, the flux rope disappears in the early stage of the third magnetic reconnection. We conclude that the formation and disappearance of the flux rope are caused by the oscillatory reconnection.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:2041-8205-874-2-AB1135
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/25663]
专题	中国科学院国家天文台
作者单位	1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming Yunnan 650216, People's Republic of China; zkxue@ynao.ac.cn 3.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, People's Republic of China 4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
推荐引用方式 GB/T 7714	Xue,Zhike,Yan,Xiaoli,Jin,Chunlan,et al. A Small-scale Oscillatory Reconnection and the Associated Formation and Disappearance of a Solar Flux Rope[J]. The Astrophysical Journal Letters,2019,874(2).
APA	Xue,Zhike.,Yan,Xiaoli.,Jin,Chunlan.,Yang,Liheng.,Wang,Jincheng.,...&Zhao,Li.(2019).A Small-scale Oscillatory Reconnection and the Associated Formation and Disappearance of a Solar Flux Rope.The Astrophysical Journal Letters,874(2).
MLA	Xue,Zhike,et al."A Small-scale Oscillatory Reconnection and the Associated Formation and Disappearance of a Solar Flux Rope".The Astrophysical Journal Letters 874.2(2019).