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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; Bi, Yi(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2017-11-10
卷号849期号:2
DOI10.3847/2041-8213/aa960e
产权排序第1完成单位
收录类别SCI
关键词Sun: Corona Sun: Flares Sun: Magnetic Fields Sun: Photosphere Sunspots
摘要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.
项目资助者Natural 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)
语种英语
学科领域天文学
文章类型Article
ISSN2041-8205
URL查看原文
WOS记录号WOS:000425250700002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]VECTOR MAGNETIC-FIELD ; ACTIVE REGIONS ; FLUX TUBE ; SUNSPOT ; ENERGY ; HELICITY ; MOTION ; TRANSIENTS ; ATMOSPHERE ; EMERGENCE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12133
专题太阳物理研究组
通讯作者Bi, Yi(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China)
作者单位1.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.
推荐引用方式
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.,...&Bi, Yi.(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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