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Observational Signatures of Tearing Instability in the Current Sheet of a Solar Flare
Lu, Lei1,2; Feng, Li1; Warmuth, Alexander3; Veronig, Astrid M.4; Huang, Jing2; Liu, Siming5; Gan, Weiqun1; Ning, Zongjun1; Ying, Beili1; Gao GN(高冠男)6
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2022
Volume924Issue:1
DOI10.3847/2041-8213/ac42c6
Contribution Rank第6完成单位
Indexed BySCI
Abstract

Magnetic reconnection is a fundamental physical process converting magnetic energy into not only plasma energy but also particle energy in various astrophysical phenomena. In this Letter, we show a unique data set of a solar flare where various plasmoids were formed by a continually stretched current sheet. Extreme ultraviolet images captured reconnection inflows, outflows, and particularly the recurring plasma blobs (plasmoids). X-ray images reveal nonthermal emission sources at the lower end of the current sheet, presumably as large plasmoids with a sufficiently amount of energetic electrons trapped in them. In the radio domain, an upward, slowly drifting pulsation structure, followed by a rare pair of oppositely drifting structures, was observed. These structures are supposed to map the evolution of the primary and the secondary plasmoids formed in the current sheet. Our results on plasmoids at different locations and scales shed important light on the dynamics, plasma heating, particle acceleration, and transport processes in the turbulent current sheet and provide observational evidence for the cascading magnetic reconnection process.

Funding ProjectNSFCNational Natural Science Foundation of China (NSFC)[12103090] ; NSFCNational Natural Science Foundation of China (NSFC)[U1731241] ; NSFCNational Natural Science Foundation of China (NSFC)[11921003] ; NSFCNational Natural Science Foundation of China (NSFC)[11973012] ; Sino-German Science Center[M-0068] ; CAS Strategic Pioneer Program on Space Science[XDA15018300] ; CAS Strategic Pioneer Program on Space Science[XDA15052200] ; CAS Strategic Pioneer Program on Space Science[XDA15320103] ; CAS Strategic Pioneer Program on Space Science[XDA15320301] ; National Key R&D Program of China[2018YFA0404200] ; CAS Key Laboratory of Solar Activity[KLSA202113] ; Youth Innovation Promotion Association ; German Space Agency DLRHelmholtz AssociationGerman Aerospace Centre (DLR)[50QL 0001] ; Austrian Science Fund (FWF)Austrian Science Fund (FWF)[P27292-N20]
Funding OrganizationNSFCNational Natural Science Foundation of China (NSFC)[12103090, U1731241, 11921003, 11973012] ; Sino-German Science Center[M-0068] ; CAS Strategic Pioneer Program on Space Science[XDA15018300, XDA15052200, XDA15320103, XDA15320301] ; National Key R&D Program of China[2018YFA0404200] ; CAS Key Laboratory of Solar Activity[KLSA202113] ; Youth Innovation Promotion Association ; German Space Agency DLRHelmholtz AssociationGerman Aerospace Centre (DLR)[50QL 0001] ; Austrian Science Fund (FWF)Austrian Science Fund (FWF)[P27292-N20]
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
ISSN2041-8205
URL查看原文
WOS IDWOS:000738261900001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSLOWLY DRIFTING STRUCTURES ; X-RAY ; MAGNETIC RECONNECTION ; ENERGY ; MODEL ; EJECTION ; FRAGMENTATION ; ACCELERATION ; PULSATIONS ; EMISSION
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24760
Collection射电天文研究组
Corresponding AuthorFeng, Li
Affiliation1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, People's Republic of China lfeng@pmo.ac.cn;
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, People's Republic of China;
3.Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany;
4.Institute of Physics & Kanzelhöhe Observatory for Solar and Environmental Research, University of Graz, A-8010 Graz, Austria;
5.School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, People's Republic of China;
6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
Recommended Citation
GB/T 7714
Lu, Lei,Feng, Li,Warmuth, Alexander,et al. Observational Signatures of Tearing Instability in the Current Sheet of a Solar Flare[J]. ASTROPHYSICAL JOURNAL LETTERS,2022,924(1).
APA Lu, Lei.,Feng, Li.,Warmuth, Alexander.,Veronig, Astrid M..,Huang, Jing.,...&Gao GN.(2022).Observational Signatures of Tearing Instability in the Current Sheet of a Solar Flare.ASTROPHYSICAL JOURNAL LETTERS,924(1).
MLA Lu, Lei,et al."Observational Signatures of Tearing Instability in the Current Sheet of a Solar Flare".ASTROPHYSICAL JOURNAL LETTERS 924.1(2022).
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