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Observation of a reversal of rotation in a sunspot during a solar flare
Bi Y(毕以)1,2; Jiang YC(姜云春)1; Yang JY(杨家艳)1; Hong JC(洪俊超)1; Li HD(李海东)1,2; Yang B(杨波)1; Xu Z(徐喆)1,2; Bi, Y (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China.
发表期刊NATURE COMMUNICATIONS
2016-12-13
卷号7页码:13798-13798
DOI10.1038/ncomms13798
产权排序第1完成单位
收录类别SCI ; EI
摘要The abrupt motion of the photospheric flux during a solar flare is thought to be a back reaction caused by the coronal field reconfiguration. However, the type of motion pattern and the physical mechanism responsible for the back reaction has been uncertain. Here we show that the direction of a sunspot's rotation is reversed during an X1.6 flare using observations from the Helioseismic and Magnetic Imager. A magnetic field extrapolation model shows that the corresponding coronal magnetic field shrinks with increasing magnetic twist density. This suggests that the abrupt reversal of rotation in the sunspot may be driven by a Lorentz torque that is produced by the gradient of twist density from the solar corona to the solar interior. These results support the view that the abrupt reversal in the rotation of the sunspot is a dynamic process responding to shrinkage of the coronal magnetic field during the flare.
项目资助者Natural Science Foundation of China (11403098, 11173058, 11473065, 11273056, 11503081, 11503082, 11633008)
语种英语
学科领域Science & Technology - Other Topics
文章类型Article
ISSN2041-1723
URL查看原文
归档日期2016-12-15
WOS记录号WOS:000389670700001
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
关键词[WOS]2011 FEBRUARY 15 ; PHOTOSPHERIC MAGNETIC-FIELD ; ACTIVE REGIONS ; LORENTZ FORCE ; X2.2 FLARE ; RAPID CHANGES ; FLUX ROPE ; HELICITY ; RECONNECTION ; EVOLUTION
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9845
专题太阳物理研究组
通讯作者Bi, Y (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650216, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650216, China
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GB/T 7714
Bi Y,Jiang YC,Yang JY,et al. Observation of a reversal of rotation in a sunspot during a solar flare[J]. NATURE COMMUNICATIONS,2016,7:13798-13798.
APA Bi Y.,Jiang YC.,Yang JY.,Hong JC.,Li HD.,...&Bi, Y .(2016).Observation of a reversal of rotation in a sunspot during a solar flare.NATURE COMMUNICATIONS,7,13798-13798.
MLA Bi Y,et al."Observation of a reversal of rotation in a sunspot during a solar flare".NATURE COMMUNICATIONS 7(2016):13798-13798.
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