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 | |
刊名 | ASTROPHYSICAL JOURNAL LETTERS |
2017-05-10 | |
卷号 | 840期号:2 |
关键词 | Sun: Activity Sun: Flares Sun: Photosphere |
ISSN号 | 2041-8205 |
DOI | 10.3847/2041-8213/aa6fee |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | Natural Science Foundation of China[11473065] ; Natural Science Foundation of China[11333007] ; Natural Science Foundation of China[11403098] ; Natural Science Foundation of China[11503081] ; Natural Science Foundation of China[11633008] ; CAS "Light of West China" Program |
WOS关键词 | PHOTOSPHERIC MAGNETIC-FIELD ; 2011 FEBRUARY 15 ; LORENTZ FORCE ; OBSERVATIONAL EVIDENCE ; SUNSPOT STRUCTURE ; RAPID CHANGES ; X2.2 FLARE ; RECONSTRUCTION ; EVOLUTION ; ENERGY |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000401097000003 |
资助机构 | Natural Science Foundation of China[11473065, 11333007, 11403098, 11503081, 11633008] ; CAS "Light of West China" Program |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/10067] |
专题 | 云南天文台_太阳物理研究组 |
通讯作者 | Xu Z(徐喆) |
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.(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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