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The Eruption of a Small-scale Emerging Flux Rope as the Driver of an M-class Flare and of a Coronal Mass Ejection
Yan, X. L.1,2,3; Jiang, C. W.4; Xue, Z. K.1,3; Wang, J. C.1,5; Priest, E. R.6; Yang, L. H.1,3; Kong, D. F.1,2,3; Cao, W. D.7; Ji, H. S.8
2017-08-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume845Issue:1Pages:13
Abstract

Solar flares and coronal mass ejections are the most powerful explosions in the Sun. They are major sources of potentially destructive space weather conditions. However, the possible causes of their initiation remain controversial. Using high-resolution data observed by the New Solar Telescope of Big Bear Solar Observaotry, supplemented by Solar Dynamics Observatory observations, we present unusual observations of a small-scale emerging flux rope near a large sunspot, whose eruption produced an M-class flare and a coronal mass ejection. The presence of the small-scale flux rope was indicated by static nonlinear force-free field extrapolation as well as data-driven magnetohydrodynamics modeling of the dynamic evolution of the coronal three-dimensional magnetic field. During the emergence of the flux rope, rotation of satellite sunspots at the footpoints of the flux rope was observed. Meanwhile, the Lorentz force, magnetic energy, vertical current, and transverse fields were increasing during this phase. The free energy from the magnetic flux emergence and twisting magnetic fields is sufficient to power the M-class flare. These observations present, for the first time, the complete process, from the emergence of the small-scale flux rope, to the production of solar eruptions.

KeywordSun: activity Sun: coronal mass ejections (CMEs) Sun: flares Sun: magnetic fields Sun: photosphere sunspots
DOI10.3847/1538-4357/aa7e29
WOS KeywordMAGNETIC-FIELD ; SOLAR-FLARES ; ACTIVE-REGION ; KINK INSTABILITY ; RAPID ROTATION ; CURRENT SHEETS ; EMERGENCE ; RECONNECTION ; SUNSPOT ; MODEL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000407168000005
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22659
Collection中国科学院紫金山天文台
Corresponding AuthorYan, X. L.
Affiliation1.Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
3.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
4.Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen 5180055, Peoples R China
5.Univ Chinese Acad Sci, Grad Sch, Yuquan Rd,Shijing Shang Block, Beijing 100049, Peoples R China
6.Univ St Andrews, Math Inst, St Andrews KY16 9SS, Fife, Scotland
7.Big Bear Solar Observ, 40386 North Shore Lane, Big Bear City, CA 92314 USA
8.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Sci, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Yan, X. L.,Jiang, C. W.,Xue, Z. K.,et al. The Eruption of a Small-scale Emerging Flux Rope as the Driver of an M-class Flare and of a Coronal Mass Ejection[J]. ASTROPHYSICAL JOURNAL,2017,845(1):13.
APA Yan, X. L..,Jiang, C. W..,Xue, Z. K..,Wang, J. C..,Priest, E. R..,...&Ji, H. S..(2017).The Eruption of a Small-scale Emerging Flux Rope as the Driver of an M-class Flare and of a Coronal Mass Ejection.ASTROPHYSICAL JOURNAL,845(1),13.
MLA Yan, X. L.,et al."The Eruption of a Small-scale Emerging Flux Rope as the Driver of an M-class Flare and of a Coronal Mass Ejection".ASTROPHYSICAL JOURNAL 845.1(2017):13.
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