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Sudden Penumbral Reappearance and Umbral Motion Induced by an M7.9 Solar Flare
Xu Z(徐喆)1,2,3; Jiang YC(姜云春)1,3; Yang JY(杨家艳)1,3; Hong JC(洪俊超)1,3; Li HD(李海东)1,2,3; Xu, Zhe(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Guandu Dist 650216, Kunming, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2017-05-10
卷号840期号:2
DOI10.3847/2041-8213/aa6fee
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Flares Sun: Photosphere
摘要The sudden flare-related changes of sunspot structures have been recognized as the photospheric responses to the solar eruptions in the corona. In this study, we report two distinctive sunspots variations associated with the flare SOL2015-06-25T08:16 (M7.9). Along the flaring polarity inversion line (PIL), the originally decayed penumbra showed a sudden reappearance, with the horizontal fields increasing in the direction of the penumbral fibrils aligned. On the other hand, the small umbra, where the reappearing penumbra rooted, had a sudden northeastward motion, toward the north part of a large sunspot located in the other side of PIL. Based on the calculation of Lorentz force changes, the area of penumbral reappearance mainly suffered a downward pressure, while the umbra region was dominated by the northeastward lateral pressure. These observations can be well understood as a result of coronal fields contraction, which can be deduced from the nonlinear force-free field extrapolation model. It also confirms the implosion idea that the restructuring of coronal fields could impact the solar surface and interior.
项目资助者Natural Science Foundation of China(11473065, 11333007, 11403098, 11503081, 11633008) ; CAS "Light of West China" Program
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:000401097000003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]PHOTOSPHERIC MAGNETIC-FIELD ; 2011 FEBRUARY 15 ; LORENTZ FORCE ; OBSERVATIONAL EVIDENCE ; SUNSPOT STRUCTURE ; RAPID CHANGES ; X2.2 FLARE ; RECONSTRUCTION ; EVOLUTION ; ENERGY
引用统计
被引频次:2[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/114a53/10067
专题太阳物理研究组
通讯作者Xu, Zhe(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Guandu Dist 650216, Kunming, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
2.University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
推荐引用方式
GB/T 7714
Xu Z,Jiang YC,Yang JY,et al. Sudden Penumbral Reappearance and Umbral Motion Induced by an M7.9 Solar Flare[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,840(2).
APA Xu Z,Jiang YC,Yang JY,Hong JC,Li HD,&Xu, Zhe.(2017).Sudden Penumbral Reappearance and Umbral Motion Induced by an M7.9 Solar Flare.ASTROPHYSICAL JOURNAL LETTERS,840(2).
MLA Xu Z,et al."Sudden Penumbral Reappearance and Umbral Motion Induced by an M7.9 Solar Flare".ASTROPHYSICAL JOURNAL LETTERS 840.2(2017).
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