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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.
Source PublicationASTROPHYSICS AND SPACE SCIENCE
2012-10
Volume341Issue:2Pages:231-239
DOI10.1007/s10509-012-1124-4
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Magnetic Fields Sun: Activity Sun: Photosphere Sun: Corona
AbstractIn 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.
Funding OrganizationNational Science Foundation of China (NSFC) [10903027, 11078005, 40636031] ; Yunnan Science Foundation of China [2009CD120] ; National Basic Research Program of China 973 [G2011CB811400]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-640X
URL查看原文
Archive Date2012-09-25
WOS IDWOS:000308960700003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; SYMPATHETIC FLARES ; ROTATING SUNSPOTS ; SOLAR-FLARE ; FLUX ROPES ; MODEL ; EQUILIBRIUM ; INSTABILITY ; HELICITY ; TUBE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6192
Collection太阳物理研究组
Corresponding AuthorYan, XL (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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