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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
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2017-05-10
Volume840Issue:2Pages:23-
DOI10.3847/2041-8213/aa7066
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Activity Sun: Chromosphere Sun: Corona Sun: Magnetic Fields
Abstract

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.

Funding ProjectNational Science Foundation of China (NSFC)[11503080] ; National Science Foundation of China (NSFC)[11373066] ; National Science Foundation of China (NSFC)[11633008] ; National Science Foundation of China (NSFC)[11633008] ; National Science Foundation of China (NSFC)[11573012] ; CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA201612] ; CAS "Light of West China" Program ; Youth Innovation Promotion Associated CAS[201156]
Funding OrganizationNational 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]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN2041-8205
URL查看原文
Archive Date2017-05-22
WOS IDWOS:000402542600001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordVACUUM SOLAR TELESCOPE ; DYNAMICS-OBSERVATORY SDO ; CORONAL MASS EJECTIONS ; MAGNETIC RECONNECTION ; FILAMENT ERUPTION ; REGION PROMINENCE ; HIGH-RESOLUTION ; EMERGENCE ; FLARES ; DRIVEN
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10094
Collection抚仙湖太阳观测站
Corresponding AuthorXue ZK(薛志科)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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.(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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