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The Photospheric Vortex Flows during a Solar Flare
Bi Y(毕以)1,2,3,4; Yang JY(杨家艳)1,4; Jiang YC(姜云春)1,4,6; Hong JC(洪俊超)1,4; Xu Z(徐喆)1,3,4; Qu, Zhining5; Ji KF(季凯帆)1,4
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2017-11-10
Volume849Issue:2
DOI10.3847/2041-8213/aa960e
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Corona Sun: Flares Sun: Magnetic Fields Sun: Photosphere Sunspots
Abstract

The rotational motions of the photospheric magnetic flux play a role in magnetic twist transportation between the corona and the solar interior. Using observations from the Helioseismic and Magnetic Imager on board the Solar Dynamic Observatory (SDO), we found one counterclockwise and two clockwise vortex flows on the photosphere in the NOAA active region 12371 during the flare SOL2015-06-22T18:23 (M6.5). The counterclockwise vortex was located on the footpoint of the erupting hot channels observed by the Atmospheric Imaging Assembly (AIA) Telescope on board SDO. The two clockwise vortices resided on either side of the polarity inversion line. At these vortices, the impulsive and irreversible change in the photospheric vector magnetic field were detected. The resulting change in the photospheric Lorentz force provides a torque in each vortex, which has the same direction with each vortex. A magnetic field extrapolation model shows that the coronal field starting from the two clockwise vortices suffered significant shrinkage during the changeover period of the photospheric field. Moreover, some of the modeled field rooted in the counterclockwise vortex displays a pronounced expansion during the flare. These results suggest that the clockwise vortices could result from the contraction of the magnetic field lines during the flare, while the counterclockwise vortex may be attributed to the expansion of the eruptive flux rope as observed in the AIA images.

Funding ProjectNatural Science Foundation of China[11403098] ; Natural Science Foundation of China[11633008] ; Natural Science Foundation of China[11573012] ; Natural Science Foundation of China[11333007] ; Natural Science Foundation of China[11503081] ; CAS[QYZDJ-SSW-SLH012] ; Specialized Research Fund for State Key Laboratories ; Foundation of Sichuan University of Science and Engineering[2015RC43]
Funding OrganizationNatural Science Foundation of China[11403098, 11633008, 11573012, 11333007, 11503081] ; CAS[QYZDJ-SSW-SLH012] ; Specialized Research Fund for State Key Laboratories ; Foundation of Sichuan University of Science and Engineering[2015RC43]
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:000425250700002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordVECTOR MAGNETIC-FIELD ; ACTIVE REGIONS ; FLUX TUBE ; SUNSPOT ; ENERGY ; HELICITY ; MOTION ; TRANSIENTS ; ATMOSPHERE ; EMERGENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12133
Collection太阳物理研究组
Corresponding AuthorBi Y(毕以)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
2.Sate Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China
3.University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
5.Department of Physics, School of Science, Sichuan University of Science and Engineering, Zigong 643000, China
6.Deceased.
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Bi Y,Yang JY,Jiang YC,et al. The Photospheric Vortex Flows during a Solar Flare[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,849(2).
APA Bi Y.,Yang JY.,Jiang YC.,Hong JC.,Xu Z.,...&Ji KF.(2017).The Photospheric Vortex Flows during a Solar Flare.ASTROPHYSICAL JOURNAL LETTERS,849(2).
MLA Bi Y,et al."The Photospheric Vortex Flows during a Solar Flare".ASTROPHYSICAL JOURNAL LETTERS 849.2(2017).
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