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The Formation Process of the First Halo Coronal Mass Ejection in Solar Cycle 25: Magnetic Cancellation, Bidirectional Jet, and Hot Channel
Yan XL(闫晓理)1,2; Wang JC(王金成)1; Guo, Qiaoling3; Xue ZK(薛志科)1; Yang LH(杨丽恒)1; Tan, Baolin2
发表期刊ASTROPHYSICAL JOURNAL
2021-09-01
卷号919期号:1页码:8
DOI10.3847/1538-4357/ac116d
产权排序第1完成单位
收录类别SCI
摘要

To better understand the trigger mechanism of a coronal mass ejection (CME), we present the evolution of a CME source region (active region NOAA 12790) and the formation of a hot channel before the occurrence of the first halo CME in solar cycle 25. Through analyzing the evolution of Solar Dynamics Observatory/Helioseismic and Magnetic Imager line-of-sight magnetograms, it is found that continuous magnetic cancellation occurs at the polarity inversion line (PIL) in this active region. With ongoing magnetic cancellation, several bidirectional jets and unidirectional jets occur along the large-scale arched magnetic loops. A hot channel forms during the first bidirectional jet. After the occurrence of the fourth bidirectional jet, the hot channel immediately erupts and produces a C-class flare, a cusp structure, and a halo CME. It is worth pointing out that the cusp structure only appears in the 131 angstrom and 94 angstrom observations (temperature about 10 MK). The obvious contraction of the newly formed loops is observed at the top of the cusp structure. The observations reveal a clear physics process: magnetic cancellation of a bipolar magnetic field at the PIL results in the occurrence of the bidirectional/unidirectional jets and the formation of the hot channel. The axial magnetic flux feeding for the hot channel through the continued magnetic cancellation leads to the hot channel eruption, which results in the formation of the hot cusp structure and the occurrence of the C-class flare and the halo CME.

资助项目National Science Foundation of China (NSFC)[11873087] ; National Science Foundation of China (NSFC)[11973084] ; National Science Foundation of China (NSFC)[11803085] ; National Science Foundation of China (NSFC)[2019FD085] ; National Science Foundation of China (NSFC)[12003064] ; National Science Foundation of China (NSFC)[11633008] ; National Science Foundation of China (NSFC)[11763004] ; National Science Foundation of China (NSFC)[U1831210] ; National Science Foundation of China (NSFC)[11803002] ; Yunnan Key Science Foundation of China[2018FA001] ; Yunnan Key Science Foundation of China[2018FB007] ; Yunnan Science Foundation for Distinguished Young Scholars[202001AV070004] ; Key Laboratory of Solar Activity of CAS[KLSA202008] ; Key Research and Development Project of Yunnan Province[202003AD150019]
项目资助者National Science Foundation of China (NSFC)[11873087, 11973084, 11803085, 2019FD085, 12003064, 11633008, 11763004, U1831210, 11803002] ; Yunnan Key Science Foundation of China[2018FA001, 2018FB007] ; Yunnan Science Foundation for Distinguished Young Scholars[202001AV070004] ; Key Laboratory of Solar Activity of CAS[KLSA202008] ; Key Research and Development Project of Yunnan Province[202003AD150019]
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000697834600001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]RECONNECTION ; FLARE ; FILAMENT ; PROMINENCE ; ERUPTIONS ; MODEL ; LOOPS
引用统计
被引频次:10[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/114a53/24634
专题抚仙湖太阳观测和研究基地
通讯作者Yan XL(闫晓理)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, People's Republic of China
3.College of Mathematics Physics and Information Engineering, Jiaxing University, Jiaxing 314001, People's Republic Of China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Yan XL,Wang JC,Guo, Qiaoling,et al. The Formation Process of the First Halo Coronal Mass Ejection in Solar Cycle 25: Magnetic Cancellation, Bidirectional Jet, and Hot Channel[J]. ASTROPHYSICAL JOURNAL,2021,919(1):8.
APA Yan XL,Wang JC,Guo, Qiaoling,Xue ZK,Yang LH,&Tan, Baolin.(2021).The Formation Process of the First Halo Coronal Mass Ejection in Solar Cycle 25: Magnetic Cancellation, Bidirectional Jet, and Hot Channel.ASTROPHYSICAL JOURNAL,919(1),8.
MLA Yan XL,et al."The Formation Process of the First Halo Coronal Mass Ejection in Solar Cycle 25: Magnetic Cancellation, Bidirectional Jet, and Hot Channel".ASTROPHYSICAL JOURNAL 919.1(2021):8.
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