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Opening of active region's large-scale overlying magnetic loops and kinking motion of a magnetic loop triggered by a vicinal small eruption
Yan XL(闫晓理)1,2; Xu, CL3; Qu ZQ(屈中权)1; Kong DF(孔德芳)1,2; Yan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
发表期刊ASTROPHYSICS AND SPACE SCIENCE
2012-10
卷号341期号:2页码:231-239
DOI10.1007/s10509-012-1124-4
产权排序第1完成单位
收录类别SCI
关键词Sun: Magnetic Fields Sun: Activity Sun: Photosphere Sun: Corona
摘要In this paper, we present a clear case of a small eruption near active region NOAA 10990 leading to opening of active region's large-scale magnetic loops and kinking motion of a magnetic loop in this active region on April 16, 2008. From a sequence of TRACE 171 images, we find that the upper large-scale overlying magnetic loops of the active region expanded upwards from the arcaded configuration to the vertical one accompanying the vicinal small eruption. At the same time, the topology of a magnetic loop inside the active region changed from the inverted "U" shape to the almost vertical one with its two legs intertwining each other. From the temporal analysis of the observations, we find that the opening of the upper large-scale overlying magnetic loops resulted in the instability of the magnetic loop inside the active region. By analyzing the surrounding coronal environment, we suggest that the existence of the lower overlying magnetic loops prevented the magnetic loop from eruption. Generally, the kinking motion of the flux rope is taken as occurrence of kink instability. In this event, the top of the magnetic loop first began the kinking motion and then the two legs intertwined each other. According to our knowledge, the latter process has not been reported. Because there was only one active region on the solar disk on April 16, 2008, it turned out to be a very good candidate for us to investigate the impact of the vicinal eruption on the active region. These findings provide evidence that the active region is very sensitive to the vicinal eruptions.
项目资助者National Science Foundation of China (NSFC) [10903027, 11078005, 40636031] ; Yunnan Science Foundation of China [2009CD120] ; National Basic Research Program of China 973 [G2011CB811400]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-640X
URL查看原文
归档日期2012-09-25
WOS记录号WOS:000308960700003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; SYMPATHETIC FLARES ; ROTATING SUNSPOTS ; SOLAR-FLARE ; FLUX ROPES ; MODEL ; EQUILIBRIUM ; INSTABILITY ; HELICITY ; TUBE
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6192
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.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan, 650011, P.R. China
2.Graduate School of Chinese Academy of Sciences, Zhongguancun, Beijing, P.R. China
3.Yunnan Normal University, Kunming, Yunnan, P.R. China
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Yan XL,Xu, CL,Qu ZQ,et al. Opening of active region's large-scale overlying magnetic loops and kinking motion of a magnetic loop triggered by a vicinal small eruption[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,341(2):231-239.
APA Yan XL,Xu, CL,Qu ZQ,Kong DF,&Yan, XL .(2012).Opening of active region's large-scale overlying magnetic loops and kinking motion of a magnetic loop triggered by a vicinal small eruption.ASTROPHYSICS AND SPACE SCIENCE,341(2),231-239.
MLA Yan XL,et al."Opening of active region's large-scale overlying magnetic loops and kinking motion of a magnetic loop triggered by a vicinal small eruption".ASTROPHYSICS AND SPACE SCIENCE 341.2(2012):231-239.
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