The Eruption of a Small-scale Emerging Flux Rope as the Driver of an M-class Flare and of a Coronal Mass Ejection

doi:10.3847/1538-4357/aa7e29

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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.1,2; Wang,J. C.2,5; Priest,E. R.6; Yang,L. H.1,2; Kong,D. F.1,2,3; Cao,W. D.7; Ji,H. S.8
刊名	The Astrophysical Journal
	2017-08-08
卷号	845 期号:1
关键词	Sun: activity Sun: coronal mass ejections (CMEs) Sun: flares Sun: magnetic fields Sun: photosphere sunspots
ISSN号	0004-637X
DOI	10.3847/1538-4357/aa7e29
英文摘要	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.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-845-1-AA7E29
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/35892]
专题	中国科学院国家天文台
作者单位	1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China 2.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, Yunnan, P. R. China; yanxl@ynao.ac.cn 3.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, 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
推荐引用方式 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]. The Astrophysical Journal,2017,845(1).
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.The Astrophysical Journal,845(1).
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".The Astrophysical Journal 845.1(2017).