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Successive X-class Flares and Coronal Mass Ejections Driven by Shearing Motion and Sunspot Rotation in Active Region NOAA 12673
Yan XL(闫晓理)1,2,3; Wang JC(王金成)1,4; Pan, G. M.5; Kong DF(孔德芳)1; Xue ZK(薛志科)1; Yang LH(杨丽恒)1; Li QL(李巧玲)1,4; Feng, X. S.6
Source PublicationASTROPHYSICAL JOURNAL
2018-03-20
Volume856Issue:1Pages:14
DOI10.3847/1538-4357/aab153
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: activity Sun: coronal mass ejections (CMEs) Sun: flares Sun: photosphere sunspots
Abstract

We present a clear case study on the occurrence of two successive X-class flares, including a decade-class flare (X9.3) and two coronal mass ejections (CMEs) triggered by shearing motion and sunspot rotation in active region NOAA 12673 on 2017 September 6. A shearing motion between the main sunspots with opposite polarities began on September 5 and lasted even after the second X-class flare on September 6. Moreover, the main sunspot with negative polarity rotated around its umbral center, and another main sunspot with positive polarity also exhibited a slow rotation. The sunspot with negative polarity at the northwest of the active region also began to rotate counterclockwise before the onset of the first X-class flare, which is related to the formation of the second S-shaped structure. The successive formation and eruption of two S-shaped structures were closely related to the counterclockwise rotation of the three sunspots. The existence of a flux rope is found prior to the onset of two flares by using nonlinear force-free field extrapolation based on the vector magnetograms observed by Solar Dynamics Observatory/Helioseismic and Magnetic Image. The first flux rope corresponds to the first S-shaped structures mentioned above. The second S-shaped structure was formed after the eruption of the first flux rope. These results suggest that a shearing motion and sunspot rotation play an important role in the buildup of the free energy and the formation of flux ropes in the corona that produces solar flares and CMEs.

Funding ProjectNational Science Foundation of China (NSFC)[11373066] ; National Science Foundation of China (NSFC)[11603071] ; National Science Foundation of China (NSFC)[11503080] ; National Science Foundation of China (NSFC)[11633008] ; National Science Foundation of China (NSFC)[11533008] ; Youth Innovation Promotion Association CAS[2011056] ; Specialized Research Fund for State Key Laboratories ; project of the Group for Innovation of Yunnan Province
Funding OrganizationNational Science Foundation of China (NSFC)[11603071, 11503080, 11633008, 11373066, 11533008] ; Youth Innovation Promotion Association CAS[2011056] ; Specialized Research Fund for State Key Laboratories ; project of the Group for Innovation of Yunnan Province
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
ISSN0004-637X
URL查看原文
WOS IDWOS:000456422400002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAGNETIC-FIELD ; SOLAR ERUPTION ; FLUX EMERGENCE ; RAPID ROTATION ; EVOLUTION ; HELICITY ; FILAMENT ; ATMOSPHERE ; ENERGETICS ; AMBIGUITY
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18230
Collection抚仙湖太阳观测站
Corresponding AuthorYan XL(闫晓理)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
2.Sate Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
4.University of Chinese Academy of Sciences, Yuquan Road, Shijingshan Block Beijing 100049, People's Republic of China
5.College of Mathematics Physics and Information Engineering, Jiaxing University, Jiaxing 314001, People's Republic of China
6.SIGMA Weather Group, State Key Laboratory for Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yan XL,Wang JC,Pan, G. M.,et al. Successive X-class Flares and Coronal Mass Ejections Driven by Shearing Motion and Sunspot Rotation in Active Region NOAA 12673[J]. ASTROPHYSICAL JOURNAL,2018,856(1):14.
APA Yan XL.,Wang JC.,Pan, G. M..,Kong DF.,Xue ZK.,...&Feng, X. S..(2018).Successive X-class Flares and Coronal Mass Ejections Driven by Shearing Motion and Sunspot Rotation in Active Region NOAA 12673.ASTROPHYSICAL JOURNAL,856(1),14.
MLA Yan XL,et al."Successive X-class Flares and Coronal Mass Ejections Driven by Shearing Motion and Sunspot Rotation in Active Region NOAA 12673".ASTROPHYSICAL JOURNAL 856.1(2018):14.
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