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题名:
The Eruption of a Small-scale Emerging Flux Rope as the Driver of an M-class Flare and of a Coronal Mass Ejection
作者: Yan XL(闫晓理)1,2,3; Jiang, C. W.4; Xue ZK(薛志科)1,3; Wang JC(王建成)1,5; Priest, E. R.6; Yang LH(杨丽恒)1,3; Kong DF(孔德芳)1,2,3; Cao, W. D.7; Ji, H. S.8
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2017-08-10
卷号: 845, 期号:1
DOI: 10.3847/1538-4357/aa7e29
学科分类: 天文学
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Yan, X. L.(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China)
关键词: Sun: activity ; Sun: coronal mass ejections (CMEs) ; Sun: flares ; Sun: magnetic fields ; Sun: photosphere ; sunspots
英文摘要: 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.
项目资助者: National Science Foundation of China (NSFC)(11373066, 11603071, 11503080, 11633008, 11533008) ; Key Laboratory of Solar Activity of CAS(KLSA201603, KLSA201508) ; Yunnan Science Foundation of China(2013FB086) ; CAS "Light of West China" Program ; Youth Innovation Promotion Association CAS(2011056) ; national basic research program of China (973 program)(2011CB811400) ; NJIT ; US NSF(AGS-1250818) ; NASA(NNX13AG14G) ; Korea Astronomy and Space Science Institute ; strategic priority research program of CAS(XDB09000000) ; Seoul National University
语种: 英语
原文出处: 查看原文
ISSN号: 0004-637X
文章类型: Article
归档日期: 2017-09-08
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: MAGNETIC-FIELD ; SOLAR-FLARES ; ACTIVE-REGION ; KINK INSTABILITY ; RAPID ROTATION ; CURRENT SHEETS ; EMERGENCE ; RECONNECTION ; SUNSPOT ; MODEL
WOS记录号: WOS:000407168000005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/11889
Appears in Collections:抚仙湖太阳观测站_期刊论文

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作者单位: 1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, Yunnan, P. R. China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, P. R. China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
4.Institute of Space Science and Applied Technology, Harbin Institute of Technology, Shenzhen, 5180055, P. R. China
5.Graduate School of University of Chinese Academy of Sciences, Yuquan Road, Shijing-shang Block Beijing 100049, P. R. China
6.Mathematics Institute, University of St Andrews, St Andrews, KY16 9SS, UK
7.Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314, USA
8.Key Laboratory for Dark Matter and Space Science, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, Jiangsu, P. R. China

Recommended Citation:
Yan XL,Jiang, C. W.,Xue ZK,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).
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