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Filament Eruption and Its Reformation Caused by Emerging Magnetic Flux
Yang B(杨波)1,2,3; Chen,Huadong3,4
Source PublicationASTROPHYSICAL JOURNAL
2019-03-20
Volume874Issue:1Pages:14
DOI10.3847/1538-4357/ab0c9e
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: activity Sun: coronal mass ejections (CMEs) Sun: filaments, prominences Sun: flares Sun: magnetic fields
Abstract

We present observations of the eruption and then reformation of a filament caused by its nearby emerging magnetic flux. Driven by the emerging magnetic flux, the emerging positive fluxes moved toward and canceled with their nearby negative fluxes, where the negative ends of a filament channel beneath the filament and a bundle of left-skewed coronal loops overlying the filament were anchored. Complemented by the nonlinear force-free field extrapolation, we find that the coronal magnetic field lines associated with the filament channel and the emerging magnetic fields consist of sheared field lines. Prior to the filament eruption, unambiguous observational evidence indicates that multiple interactions occurred between the emerging magnetic fields and the left-skewed coronal loops, implying a tether-weakening reconnection. Specifically, during the final episode of the tether-weakening reconnection, a remarkable sigmoid structure was formed and lifted up together with the filament. Accordingly, we speculate that the tether-weakening reconnection probably destabilized the filament system and triggered its rise. Subsequently, the filament and the sigmoid structure erupted together and produced a coronal mass ejection. After the eruption, the emerging magnetic fields continued to reconnect with the remaining filament channel, leading to the reformation of the filament. This observation strongly supports the idea that emerging magnetic flux plays an important role in triggering the filament to erupt, and the filament is reformed by magnetic reconnection between the emerging magnetic fields and its nearby filament channel.

Funding ProjectNatural Science Foundation of China[11703084] ; Natural Science Foundation of China[11633008] ; Natural Science Foundation of China[11873088] ; Natural Science Foundation of China[11573012] ; CAS "Light of West China" Program ; Open Research Program of the Key Laboratory of Solar Activity of Chinese Academy of Sciences[KLSA201809] ; CAS[QYZDJ-SSW-SLH012] ; Project of the Group for Innovation of Yunnan Province
Funding OrganizationNatural Science Foundation of China[11703084, 11633008, 11873088, 11573012] ; CAS "Light of West China" Program ; Open Research Program of the Key Laboratory of Solar Activity of Chinese Academy of Sciences[KLSA201809] ; CAS[QYZDJ-SSW-SLH012] ; Project of the Group for Innovation of Yunnan Province
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000462738400014
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; ACTIVE-REGION ; HELICAL FLUX ; PROMINENCE ; EMERGENCE ; ROPE ; FLARE ; FIELD ; RECONNECTION ; MODELS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/19549
Collection抚仙湖太阳观测站
Corresponding AuthorYang B(杨波)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People’s Republic of China;
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China
3.Key Laboratory of Solar Activity, National Astronomical Observatories of Chinese Academy of Science, Beijing 100012, People's Republic of China
4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yang B,Chen,Huadong. Filament Eruption and Its Reformation Caused by Emerging Magnetic Flux[J]. ASTROPHYSICAL JOURNAL,2019,874(1):14.
APA Yang B,&Chen,Huadong.(2019).Filament Eruption and Its Reformation Caused by Emerging Magnetic Flux.ASTROPHYSICAL JOURNAL,874(1),14.
MLA Yang B,et al."Filament Eruption and Its Reformation Caused by Emerging Magnetic Flux".ASTROPHYSICAL JOURNAL 874.1(2019):14.
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