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题名:
The causality between the rapid rotation of a sunspot and an X3.4 flare
作者: Yan XL(闫晓理)1,2; Qu ZQ(屈中权)1; Xu, CL3; Xue ZK(薛志科)1,2; Kong, DF4
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期: 2009-05
卷号: 9, 期号:5, 页码:596-602
DOI: 10.1088/1674-4527/9/5/010
学科分类: Astronomy & Astrophysics
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Yan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
关键词: Sun: sunspots ; Sun: flares ; Sun: magnetic fields
英文摘要: Using multi-wavelength data of Hinode, the rapid rotation of a sunspot in active region NOAA 10930 is studied in detail. We found extraordinary counterclockwise rotation of the sunspot with positive polarity before an X3.4 flare. From a series of vector magnetograms, it is found that magnetic force lines are highly sheared along the neutral line accompanying the sunspot rotation. Furthermore, it is also found that sheared loops and an inverse S-shaped magnetic loop in the corona formed gradually after the sunspot rotation. The X3.4 flare can be reasonably regarded as a result of this movement. A detailed analysis provides evidence that sunspot rotation leads to magnetic field lines twisting in the photosphere. The twist is then transported into the corona and triggers flares.
语种: 英语
原文出处: 查看原文
ISSN号: 1674-4527
文章类型: Article
归档日期: 2009-04-20
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: VECTOR MAGNETIC-FIELDS ; SIGMOIDAL ACTIVE-REGION ; CORONAL MASS EJECTIONS ; MAJOR SOLAR EVENT ; HINODE MISSION ; JULY 14 ; EVOLUTION ; CANCELLATION ; TELESCOPE ; EMERGENCE
WOS记录号: WOS:000266398200010
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/6138
Appears in Collections:太阳物理研究组_期刊论文

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作者单位: 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Graduate School of Chinese Academy of Sciences, Beijing 100049, China
3.Yunnan Normal University, Kunming 650092, China
4.Jiaxing University, Jiaxing 314001, China

Recommended Citation:
Yan XL,Qu ZQ,Xu, CL,et al. The causality between the rapid rotation of a sunspot and an X3.4 flare[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2009,9(5):596-602.
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文件名: The causality between the rapid rotation of a sunspot and an X3.4 flare.pdf
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