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)2,3; Wang JC(王金成)3; Guo, Qiaoling1; Xue ZK(薛志科)3; Yang LH(杨丽恒)3; Tan, Baolin2 | |
刊名 | ASTROPHYSICAL JOURNAL |
2021-09-01 | |
卷号 | 919期号:1页码:8 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ac116d |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
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] |
WOS关键词 | RECONNECTION ; FLARE ; FILAMENT ; PROMINENCE ; ERUPTIONS ; MODEL ; LOOPS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000697834600001 |
资助机构 | 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] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24633] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Yan XL(闫晓理) |
作者单位 | 1.College of Mathematics Physics and Information Engineering, Jiaxing University, Jiaxing 314001, People's Republic Of China 2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, People's Republic of China 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China |
推荐引用方式 GB/T 7714 | 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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