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A White-light Flare Powered by Magnetic Reconnection in the Lower Solar Atmosphere
Song Yongliang1,2; Tian Hui1,2; Zhu Xiaoshuai3; Chen Yajie2,3; Zhang Mei1,4; Zhang Jingwen5
2020-04-10
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume893Issue:1Pages:7
AbstractWhite-light flares (WLFs), first observed in 1859, refer to a type of solar flare showing an obvious enhancement of the visible continuum emission. This type of enhancement often occurs in most energetic flares, and is usually interpreted as a consequence of efficient heating in the lower solar atmosphere through nonthermal electrons propagating downward from the energy release site in the corona. However, this coronal-reconnection model has difficulty in explaining the recently discovered small WLFs. Here we report a C2.3 WLF, which is associated with several observational phenomena: a fast decrease in opposite-polarity photospheric magnetic fluxes, the disappearance of two adjacent pores, significant heating of the lower chromosphere, a negligible increase of the hard X-ray flux, and an associated U-shaped magnetic field configuration. All these suggest that this WLF is powered by magnetic reconnection in the lower part of the solar atmosphere rather than by reconnection higher up in the corona.
KeywordSolar flares Solar magnetic fields Solar magnetic reconnection Solar active regions
Funding OrganizationNSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA ; NSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA ; NSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA ; NSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA
DOI10.3847/2041-8213/ab83fa
WOS KeywordHARD X-RAY ; FLUX ; TELESCOPE ; EMERGENCE ; REGION ; ORIGIN ; TRACE
Language英语
Funding ProjectNSFC[11803002] ; NSFC[11825301] ; NSFC[11973056] ; NSFC[11790304(11790300)] ; NSFC[U1531247] ; CAS Key Laboratory of Solar Activity[KLSA201810] ; Strategic Priority Research Program of CAS[XDA17040507] ; Max Planck Partner Group program ; Norwegian Space Center ; ESA
Funding OrganizationNSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA ; NSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA ; NSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA ; NSFC ; NSFC ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Max Planck Partner Group program ; Max Planck Partner Group program ; Norwegian Space Center ; Norwegian Space Center ; ESA ; ESA
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000526404500001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/55783
Collection中国科学院国家天文台
Corresponding AuthorSong Yongliang
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
3.Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
5.Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA
Recommended Citation
GB/T 7714
Song Yongliang,Tian Hui,Zhu Xiaoshuai,et al. A White-light Flare Powered by Magnetic Reconnection in the Lower Solar Atmosphere[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,893(1):7.
APA Song Yongliang,Tian Hui,Zhu Xiaoshuai,Chen Yajie,Zhang Mei,&Zhang Jingwen.(2020).A White-light Flare Powered by Magnetic Reconnection in the Lower Solar Atmosphere.ASTROPHYSICAL JOURNAL LETTERS,893(1),7.
MLA Song Yongliang,et al."A White-light Flare Powered by Magnetic Reconnection in the Lower Solar Atmosphere".ASTROPHYSICAL JOURNAL LETTERS 893.1(2020):7.
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