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Formation and Eruption Process of a Filament in Active Region NOAA 12241
Wang JC(王金成)1,2,3; Yan XL(闫晓理)1,3; Qu ZQ(屈中权)1,2,3; Xue ZK(薛志科)1,3; Yang LH(杨丽恒)1,3; Wang, Jincheng(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-04-20
卷号839期号:2
DOI10.3847/1538-4357/aa6bf3
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Evolution Sun: Filaments Prominences
摘要In order to better understand active-region filaments, we present an intensive study on the formation and eruption of a filament in active region NOAA 12241 during the period from 2014 December 18 to 19. Using observations from the Helioseismic and Magnetic Imager (HMI) vector magnetograms, we investigate the helicity injection rate, Lorentz force, and vertical electric current in the entire region associated with the filament. The helicity injection rate before eruption is found to be larger than that after eruption, while the vertical electric current undergoes an increase at first and then a gradual decrease, similar to what the magnetic flux undergoes. Meanwhile, we find that the right part of the filament is formed by magnetic reconnection between two bundles of magnetic field lines while the left part originated from shearing motion. The interaction of the two parts causes the eruption of this filament. The mean horizontal magnetic fields in the vicinity of the magnetic polarity inversion line (PIL) enhance rapidly during the eruption. Another striking phenomenon, where the vertical electric currents close to the magnetic PIL suddenly expand toward two sides during the eruption, is found. We propose that this fascinating feature is associated with the release of energy during the eruption.
项目资助者National Science Foundation of China (NSFC)(11373065, 11527804, 11373066, 11503080, 11633008, 11603071) ; Key Laboratory of Solar Activity of CAS(KLSA201508) ; Yunnan Science Foundation of China(2013FB086) ; Youth Innovation Promotion Association CAS(2011056) ; Talent Project of Western Light of Chinese Academy of Sciences
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000403467800004
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; PHOTOSPHERIC MAGNETIC-FIELD ; HELICAL FLUX ROPE ; SOLAR PROMINENCES ; LORENTZ FORCE ; INDUCTION EQUATION ; FLARES ; RECONNECTION ; EVOLUTION ; DYNAMICS
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10138
专题光纤阵列太阳光学望远镜研究组
通讯作者Wang, Jincheng(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Graduate School of University of Chinese Academy of Sciences, Yuquan Road, Shijingshang Block Beijing 100049, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China
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Wang JC,Yan XL,Qu ZQ,et al. Formation and Eruption Process of a Filament in Active Region NOAA 12241[J]. ASTROPHYSICAL JOURNAL,2017,839(2).
APA Wang JC,Yan XL,Qu ZQ,Xue ZK,Yang LH,&Wang, Jincheng.(2017).Formation and Eruption Process of a Filament in Active Region NOAA 12241.ASTROPHYSICAL JOURNAL,839(2).
MLA Wang JC,et al."Formation and Eruption Process of a Filament in Active Region NOAA 12241".ASTROPHYSICAL JOURNAL 839.2(2017).
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