The Role of a Tiny Brightening in a Huge Geoeffective Solar Eruption Leading to the St. Patrick's Day Storm

doi:10.3847/1538-4357/ab06ff

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	The Role of a Tiny Brightening in a Huge Geoeffective Solar Eruption Leading to the St. Patrick's Day Storm
	Bamba, Yumi 2; Inoue, Satoshi 3; Hayashi, Keiji 1,3,4
刊名	ASTROPHYSICAL JOURNAL
	2019-03-20
卷号	874 期号:1 页码:11
关键词	solar-terrestrial relations Sun: coronal mass ejections (CMEs) Sun: filaments, prominences Sun: flares Sun: magnetic fields
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab06ff
英文摘要	The largest magnetic storm in solar cycle 24 was caused by a fast coronal mass ejection (CME) that was related to a small C9.1 flare that occurred on 2015 March 15 in solar active region (AR) NOAA 12297. The purpose of this study is to understand the onset mechanism of the geoeffective huge solar eruption. We focused on the C2.4 flare that occurred prior to the C9.1 flare of the filament eruption. The magnetic field structure in the AR was complicated: there were several filaments, including the one that erupted and caused the CME. We hence carefully investigated the photospheric magnetic field, brightenings observed in the solar atmosphere, and the 3D coronal magnetic field extrapolated from nonlinear force-free field modeling, using data from Hinode and Solar Dynamics Observatory. We found three intriguing points. (1) There was a compact but noticeably highly twisted magnetic field structure that is represented by a small filament in the C2.4 flaring region, where a tiny precursor brightening (PB) was observed before the C2.4 flare. (2) The C2.4 flaring region is located in the vicinity of a foot point of the closed field that prohibits the filament from erupting. (3) The filament shows a sudden eruption after the C2.4 flare and the accompanying small filament eruption. From our analysis, we suggest that a small magnetic disturbance that was represented by the tiny PB at the time of the C2.4 flare is related to the trigger of the huge filament eruption.
资助项目	Project for Solar-Terrestrial Environment Prediction (PSTEP) ; MEXT/KAKENHI ; MEXT/JSPS KAKENHI[JP15J10092] ; MEXT/JSPS KAKENHI[JP16H07478] ; MEXT/JSPS KAKENHI[JP15H05812] ; MEXT/JSPS KAKENHI[JP15H05814] ; MEXT/JSPS KAKENHI[JP15K21709]
WOS关键词	ACTIVE-REGION ; NUMERICAL SIMULATIONS ; KINK INSTABILITY ; EMERGING FLUX ; FIELD ; RESOLUTION ; AMBIGUITY ; FLARE ; MISSION
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000462602500006
资助机构	Project for Solar-Terrestrial Environment Prediction (PSTEP) ; Project for Solar-Terrestrial Environment Prediction (PSTEP) ; MEXT/KAKENHI ; MEXT/KAKENHI ; MEXT/JSPS KAKENHI ; MEXT/JSPS KAKENHI ; Project for Solar-Terrestrial Environment Prediction (PSTEP) ; Project for Solar-Terrestrial Environment Prediction (PSTEP) ; MEXT/KAKENHI ; MEXT/KAKENHI ; MEXT/JSPS KAKENHI ; MEXT/JSPS KAKENHI ; Project for Solar-Terrestrial Environment Prediction (PSTEP) ; Project for Solar-Terrestrial Environment Prediction (PSTEP) ; MEXT/KAKENHI ; MEXT/KAKENHI ; MEXT/JSPS KAKENHI ; MEXT/JSPS KAKENHI ; Project for Solar-Terrestrial Environment Prediction (PSTEP) ; Project for Solar-Terrestrial Environment Prediction (PSTEP) ; MEXT/KAKENHI ; MEXT/KAKENHI ; MEXT/JSPS KAKENHI ; MEXT/JSPS KAKENHI
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/25669]
专题	中国科学院国家天文台
通讯作者	Bamba, Yumi
作者单位	1.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China 2.Japan Aerosp Explorat Agcy JAXA, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan 3.Nagoya Univ, Inst Space Earth Environm Res ISEE, Chikusa Ku, Nagoya, Aichi 4648601, Japan 4.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Bamba, Yumi,Inoue, Satoshi,Hayashi, Keiji. The Role of a Tiny Brightening in a Huge Geoeffective Solar Eruption Leading to the St. Patrick's Day Storm[J]. ASTROPHYSICAL JOURNAL,2019,874(1):11.
APA	Bamba, Yumi,Inoue, Satoshi,&Hayashi, Keiji.(2019).The Role of a Tiny Brightening in a Huge Geoeffective Solar Eruption Leading to the St. Patrick's Day Storm.ASTROPHYSICAL JOURNAL,874(1),11.
MLA	Bamba, Yumi,et al."The Role of a Tiny Brightening in a Huge Geoeffective Solar Eruption Leading to the St. Patrick's Day Storm".ASTROPHYSICAL JOURNAL 874.1(2019):11.