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Solar Tornadoes Triggered by Interaction between Filaments and EUV Jets
Chen, Huadong1; Zhang, Jun1; Ma, Suli1,2; Yan XL(闫晓理)3; Xue, Jianchao4
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2017-05-20
Volume841Issue:1
DOI10.3847/2041-8213/aa71a2
Contribution Rank第3完成单位
Indexed BySCI
KeywordSun: activity Sun: filaments, prominences Sun: rotation Sun: UV radiation
Abstract

We investigate the formations and evolutions of two successive solar tornadoes in/near AR 12297 during 2015 March 19-20. Recurrent EUV jets close to two filaments were detected along a large-scale coronal loop prior to the appearances of the tornadoes. Under the disturbances from the activities, the filaments continually ascended and finally interacted with the loops tracked by the jets. Subsequently, the structures of the filaments and the loop were merged together, probably via magnetic reconnections, and formed tornado-like structures with a long spiral arm. Our observations suggest that solar tornadoes can be triggered by the interaction between filaments and nearby coronal jets, which has rarely been reported before. At the earlier development phase of the first tornado, about 30 small-scale sub-jets appeared in the tornado's arm, accompanied by local EUV brightenings. They have an ejection direction approximately vertical to the axis of the arm and a typical maximum speed of similar to 280 km s(-1). During the ruinations of the two tornadoes, fast plasma outflows from the strong EUV brightenings inside tornadoes are observed, in company with the untangling or unwinding of the highly twisted tornado structures. These observational features indicate that self reconnections probably occurred between the tangled magnetic fields of the tornadoes and resulted in the rapid disintegrations and disappearances of the tornadoes. According to the reconnection theory, we also derive the field strength of the tornado core to be similar to 8G.

Funding ProjectNSFC[11533008] ; NSFC[41331068] ; NSFC[41204124] ; NSFC[11221063] ; NSFC[11673034] ; NSFC[11673035] ; China Postdoctoral Science Foundation[2015M571126] ; ESA ; Norwegian Space Centre
Funding OrganizationNSFC[11533008, 41331068, 41204124, 11221063, 11673034, 11673035] ; China Postdoctoral Science Foundation[2015M571126] ; ESA ; Norwegian Space Centre
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
WOS IDWOS:000402563400011
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordH-ALPHA SURGES ; QUIET SUN ; MAGNETIC-FIELDS ; PROMINENCE ; CORONA ; DYNAMICS ; CYCLONES ; ERUPTION ; SDO/AIA ; FLARES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10086
Collection抚仙湖太阳观测站
Corresponding AuthorChen, Huadong
Affiliation1.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.College of Science, China University of Petroleum, Qingdao 266580, China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
4.Key Laboratory for Dark Matter and Space Science, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
Recommended Citation
GB/T 7714
Chen, Huadong,Zhang, Jun,Ma, Suli,et al. Solar Tornadoes Triggered by Interaction between Filaments and EUV Jets[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,841(1).
APA Chen, Huadong,Zhang, Jun,Ma, Suli,Yan XL,&Xue, Jianchao.(2017).Solar Tornadoes Triggered by Interaction between Filaments and EUV Jets.ASTROPHYSICAL JOURNAL LETTERS,841(1).
MLA Chen, Huadong,et al."Solar Tornadoes Triggered by Interaction between Filaments and EUV Jets".ASTROPHYSICAL JOURNAL LETTERS 841.1(2017).
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