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Observing Formation of Flux Rope by Tether-cutting Reconnection in the Sun
Xue ZK(薛志科)1,2,3; Yan XL(闫晓理)1,2,3; Yang LH(杨丽恒)1,3; Wang JC(王建成)1,3,4; Zhao L(赵丽)1,3; Xue, Zhike(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2017-05-10
卷号840期号:2页码:23-
DOI10.3847/2041-8213/aa7066
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Chromosphere Sun: Corona Sun: Magnetic Fields
摘要Tether-cutting reconnection is considered as one mechanism for the formation of a flux rope. It has been proposed for more than 30 years; however, so far, direct observations of it are very rare. In this Letter, we present observations of the formation of a flux rope via tether-cutting reconnection in NOAA AR 11967 on 2014 February 2 by combining observations with the New Vacuum Solar Telescope and the Solar Dynamic Observatory. The tether-cutting reconnection occurs between two sets of highly sheared magnetic arcades. Comprehensive observational evidence of the reconnection is as follows: changes of the connections between the arcades, brightenings at the reconnection site, hot outflows, formation of a flux rope, slow-rise motion of the flux rope, and flux cancelation. The outflows are along three directions from the reconnection site to the footpoints with the velocities from 24 +/- 1 km s(-1) to 69 +/- 5 km s(-1). Additionally, it is found that the newly formed flux rope connects far footpoints and has a left-handed twisted structure with many fine threads and a concave-up-shape structure in the middle. All the observations are in agreement with the tether-cutting model and provide evidence that tether-cutting reconnection leads to the formation of the flux rope associated with flux shear flow and cancelation.
项目资助者National Science Foundation of China (NSFC)(11503080, 11373066, 11633008, 11573012, 11373065) ; CAS Key Laboratory of Solar Activity, National Astronomical Observatories(KLSA201612) ; CAS "Light of West China" Program ; Youth Innovation Promotion Associated CAS(201156)
语种英语
学科领域天文学
文章类型Article
ISSN2041-8205
URL查看原文
归档日期2017-05-22
WOS记录号WOS:000402542600001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]VACUUM SOLAR TELESCOPE ; DYNAMICS-OBSERVATORY SDO ; CORONAL MASS EJECTIONS ; MAGNETIC RECONNECTION ; FILAMENT ERUPTION ; REGION PROMINENCE ; HIGH-RESOLUTION ; EMERGENCE ; FLARES ; DRIVEN
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被引频次:2[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/114a53/10094
专题抚仙湖太阳观测站
通讯作者Xue, Zhike(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming Yunnan 650216, China
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
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GB/T 7714
Xue ZK,Yan XL,Yang LH,et al. Observing Formation of Flux Rope by Tether-cutting Reconnection in the Sun[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,840(2):23-.
APA Xue ZK,Yan XL,Yang LH,Wang JC,Zhao L,&Xue, Zhike.(2017).Observing Formation of Flux Rope by Tether-cutting Reconnection in the Sun.ASTROPHYSICAL JOURNAL LETTERS,840(2),23-.
MLA Xue ZK,et al."Observing Formation of Flux Rope by Tether-cutting Reconnection in the Sun".ASTROPHYSICAL JOURNAL LETTERS 840.2(2017):23-.
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