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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
2017-08-08
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume845Issue:1
AbstractAbstract 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
Language英语
WOS IDIOP:0004-637X-845-1-aa7e29
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/35893
Collection中国科学院国家天文台
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, Yunnan, P. R. China; yanxl@ynao.ac.cn
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
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
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]. 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).
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