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Two-step Evolution of a Rising Flux Rope Resulting in a Confined Solar Flare
Yang, Shuhong1,2; Zhang, Jun1,2; Song, Qiao3; Bi Y(毕以)4; Li, Ting1,2
Source PublicationASTROPHYSICAL JOURNAL
2019-06-10
Volume878Issue:1Pages:9
DOI10.3847/1538-4357/ab1f67
Contribution Rank第1完成单位
Indexed BySCI
Keywordmagnetic reconnection Sun: activity Sun: flares Sun: magnetic fields
AbstractCombining the Solar Dynamics Observatory and the New Vacuum Solar Telescope observations, we study a confined flare triggered by a rising flux rope within the trailing sunspots of active region 12733. The flux rope lying above the sheared polarity inversion line can be constructed through magnetic extrapolation but could not be detected in multiwavelength images at the pre-flare stage. The conspicuous shearing motions between the opposite-polarity fields in the photosphere are considered to be responsible for the flux rope formation. The maximum twist of the flux rope is as high as -1.76, and then the flux rope rises due to the kink instability. Only when the flare starts can the flux rope be observed in high-temperature wavelengths. The differential emission measure results confirm that this flux rope is a high-temperature structure. Associated with the rising flux rope, there appear many post-flare loops and a pair of flare ribbons. When the rising flux rope meets and reconnects with the large-scale overlying field lines, a set of large-scale twisted loops are formed, and two flare ribbons propagating in opposite directions appear on the outskirts of the former ribbons, indicating that the twist of the flux rope is transferred to a much larger system. These results imply that the external reconnection between the rising flux rope and the large-scale overlying loops plays an important role in the confined flare formation.
Funding ProjectNational Natural Science Foundations of China[11673035] ; National Natural Science Foundations of China[11790304] ; National Natural Science Foundations of China[41404136] ; National Natural Science Foundations of China[11773039] ; National Natural Science Foundations of China[11533008] ; National Natural Science Foundations of China[41774195] ; National Natural Science Foundations of China[11790300] ; Key Programs of the Chinese Academy of Sciences[QYZDJ-SSW-SLH050] ; Youth Innovation Promotion Association of CAS[2014043] ; Youth Innovation Promotion Association of CAS[2017078] ; Young Elite Scientists Sponsors hip Program by CAST[2018QNRC001]
Funding OrganizationNational Natural Science Foundations of China ; Key Programs of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of CAS ; Young Elite Scientists Sponsors hip Program by CAST
Language英语
Subject Area天文学 ; 太阳与太阳系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000471316800001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordINTERNAL RECONNECTION ; EXTERNAL RECONNECTION ; ERUPTIONS ; FORCE ; MODEL ; EJECTIONS ; ONSET
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/20324
Collection抚仙湖太阳观测站
Corresponding AuthorYang, Shuhong
Affiliation1.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3.Key Laboratory of Space Weather, National Center for Space Weather, China Meteorological Administration, Beijing 100081, People's Republic of China
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
Recommended Citation
GB/T 7714
Yang, Shuhong,Zhang, Jun,Song, Qiao,et al. Two-step Evolution of a Rising Flux Rope Resulting in a Confined Solar Flare[J]. ASTROPHYSICAL JOURNAL,2019,878(1):9.
APA Yang, Shuhong,Zhang, Jun,Song, Qiao,Bi Y,&Li, Ting.(2019).Two-step Evolution of a Rising Flux Rope Resulting in a Confined Solar Flare.ASTROPHYSICAL JOURNAL,878(1),9.
MLA Yang, Shuhong,et al."Two-step Evolution of a Rising Flux Rope Resulting in a Confined Solar Flare".ASTROPHYSICAL JOURNAL 878.1(2019):9.
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