YNAO OpenIR  > 太阳物理研究组
Rapid rotation of a sunspot associated with flares
Yan XL(闫晓理)1,2; Qu ZQ(屈中权)1; Yan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
发表期刊ASTRONOMY & ASTROPHYSICS
2007-06
卷号468期号:3页码:1083-1088
DOI10.1051/0004-6361:20077064
产权排序第1完成单位
收录类别SCI ; EI
关键词Sun : Sunspots Sun : Flares Sun : Magnetic Fields
摘要Context. Active region NOAA 10424 observed on August 5, 2003 is studied in detail by using TRACE, SOHO/MDI, BBSO H alpha monograph, and GOES data. This investigation focuses on the sunspot rotation and its relation with the eruptive phenomena by analyzing the magnetic configuration that the rotation results in. Aims. It is shown that there is a close relationship between the sunspot rotation and the emerging kinked magnetic Omega-loops, where the flares occur. Methods. Through tracing the traceable features motion by using the TRACE white-light images, one can get the rotation velocities of the umbra, the penumbra, the area near the penumbra, and the area far from the penumbra. Furthermore, the evolution of the emerging kinked magnetic Omega-loops and magnetic fields were studied. Results. For the sunspot with positive polarity, the umbra, the penumbra, and the area near the penumbra exhibit a conspicuous counterclockwise rotation. Moreover, the velocities decrease from the umbra through the penumbra to the area near the penumbra. It is interesting that the rotation of the umbra, the penumbra, and the area near the penumbra are opposite to that of the area far from penumbra. The rotation velocities of the umbra, the penumbra, polarity separation, and total magnetic flux increase with time. During the largest event (M1.7/Sn flare), emerging kinked magnetic Omega-loops are observed from TRACE 171 angstrom images. Conclusions. The different rotation speeds of the different parts of the sunspot cause twist, and then the twist is injected through the chromosphere into the corona to trigger the flares.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6361
URL查看原文
归档日期2007-06-08
WOS记录号WOS:000247084400041
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE-REGION ; MAGNETIC-FIELDS ; CONSEQUENCES ; EVOLUTION ; DYNAMICS ; MISSION ; CORONA
引用统计
被引频次:34[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/114a53/6105
专题太阳物理研究组
通讯作者Yan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
作者单位1.Yunnan Astronomical Observatory/National Astronomical Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, PR China
2.Graduate School of Chinese Academy of Sciences, Zhongguancun, Beijing, PR China
推荐引用方式
GB/T 7714
Yan XL,Qu ZQ,Yan, XL . Rapid rotation of a sunspot associated with flares[J]. ASTRONOMY & ASTROPHYSICS,2007,468(3):1083-1088.
APA Yan XL,Qu ZQ,&Yan, XL .(2007).Rapid rotation of a sunspot associated with flares.ASTRONOMY & ASTROPHYSICS,468(3),1083-1088.
MLA Yan XL,et al."Rapid rotation of a sunspot associated with flares".ASTRONOMY & ASTROPHYSICS 468.3(2007):1083-1088.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Rapid rotation of a (747KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Yan XL(闫晓理)]的文章
[Qu ZQ(屈中权)]的文章
[Yan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.]的文章
百度学术
百度学术中相似的文章
[Yan XL(闫晓理)]的文章
[Qu ZQ(屈中权)]的文章
[Yan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.]的文章
必应学术
必应学术中相似的文章
[Yan XL(闫晓理)]的文章
[Qu ZQ(屈中权)]的文章
[Yan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Rapid rotation of a sunspot associated with flares.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。