Formation and Eruption Process of a Filament in Active Region NOAA 12241

CORC > 云南天文台 > 中国科学院云南天文台 > 光纤阵列太阳光学望远镜研究组

	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
刊名	ASTROPHYSICAL JOURNAL
	2017-04-20
卷号	839 期号:2
关键词	Sun: activity Sun: evolution Sun: filaments, prominences
ISSN号	0004-637X
通讯作者	Wang, Jincheng(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China)
产权排序	第1完成单位
英文摘要	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.
学科主题	天文学
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	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
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.3847/1538-4357/aa6bf3/meta
语种	英语
WOS记录号	WOS:000403467800004
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/10138]
专题	云南天文台_光纤阵列太阳光学望远镜研究组
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
推荐引用方式 GB/T 7714	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.(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).