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Quadrupolar Dimmings During a Partial Halo Coronal Mass Ejection Event
Yang JY(杨家艳)1; Jiang YC(姜云春)1; Zheng RS(郑瑞生)1,2; Hong JC(洪俊超)1,2; Bi Y(毕以)1,2; Yang LH(杨丽恒)1,2; Jiang, Y (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationSOLAR PHYSICS
2011-06
Volume270Issue:2Pages:551-559
DOI10.1007/s11207-011-9762-1
Contribution Rank第1完成单位
Indexed BySCI
KeywordCorona Activity Coronal Mass Ejections Low Coronal Signatures Magnetic Fields Corona Prominences Activity
AbstractWe present detailed observations of the formations of four distinct coronal dimmings during a flare of 17 September 2002, which was followed by an eruption of a huge coronal loop system, and then an over-and-out partial halo coronal mass ejection (CME), with the same direction as the loop system eruption but laterally far offset from the flare site. Among the four dimmings, two compact ones were symmetrically located in the opposite polarity regions immediately adjacent to the highly sheared magnetic polarity inversion line in the flare region, and hence were probably composed of bipolar double dimmings due to a flux-rope eruption and represented its evacuated footpoints. However, another nearby compact dimming and a remote diffuse one were formed in the opposite polarity footpoint regions of the eruptive loop system, and thus probably consisted of a pair of dimmings magnetically linked by the erupting loop system and also indicated its evacuated footpoints. The loop system might have played a role in guiding the erupting flare field and producing the over-and-out CME, but its eruption might simply have been pushed out by the erupting flare field, because there was no reconnection signature between them. From comparison with a derived potential-field source-surface (PFSS) magnetic configuration, our observations consistently suggest that the dimmings were formed in pairs and originated from the eruptions of the two different magnetic systems. We thus define them as "quadrupolar dimmings."
Funding Organization973 Program [2011CB811400] ; Natural Science Foundation of China [10973038, 40636031] ; Scientific Application Foundation of Yunnan Province [2007A112M, 2007A115M]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0038-0938
URL查看原文
Archive Date2011-07-12
WOS IDWOS:000293142700010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAGNETIC CLOUD ; REGION ; FLARE ; EIT
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6179
Collection太阳物理研究组
Corresponding AuthorJiang, Y (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, 650011, China
2.Graduate School of Chinese Academy of Sciences, Beijing, 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yang JY,Jiang YC,Zheng RS,et al. Quadrupolar Dimmings During a Partial Halo Coronal Mass Ejection Event[J]. SOLAR PHYSICS,2011,270(2):551-559.
APA Yang JY.,Jiang YC.,Zheng RS.,Hong JC.,Bi Y.,...&Jiang, Y .(2011).Quadrupolar Dimmings During a Partial Halo Coronal Mass Ejection Event.SOLAR PHYSICS,270(2),551-559.
MLA Yang JY,et al."Quadrupolar Dimmings During a Partial Halo Coronal Mass Ejection Event".SOLAR PHYSICS 270.2(2011):551-559.
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