中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
THE ROLE OF ACTIVE REGION CORONAL MAGNETIC FIELD IN DETERMINING CORONAL MASS EJECTION PROPAGATION DIRECTION

文献类型:期刊论文

作者Wang, Rui1; Liu, Ying D.1; Dai, Xinghua2,3; Yang, Zhongwei1; Huang, Chong4,5; Hu, Huidong1
刊名ASTROPHYSICAL JOURNAL
出版日期2015-11-20
卷号814期号:1
关键词Sun: activity Sun: coronal mass ejections (CMEs) Sun: magnetic fields
英文摘要We study the role of the coronal magnetic field configuration of an active region (AR) in determining the propagation direction of a coronal mass ejection (CME). The CME occurred in the AR 11944 (S09W01) near the disk center on 2014 January 7 and was associated with an X1.2 flare. A new CME reconstruction procedure based on a polarimetric technique is adopted, which shows that the CME changed its propagation direction by around 28 degrees in latitude within 2.5 R-circle dot and 43 degrees in longitude within 6.5 R-circle dot with respect to the CME source region. This significant non-radial motion is consistent with the finding of Mostl et al. We use nonlinear force-free field and potential field source surface extrapolation methods to determine the configurations of the coronal magnetic field. We also calculate the magnetic energy density distributions at different heights based on the extrapolations. Our results show that the AR coronal magnetic field has a strong influence on the CME propagation direction. This is consistent with the "channeling" by the AR coronal magnetic field itself, rather than deflection by nearby structures. These results indicate that the AR coronal magnetic field configuration has to be taken into account in order to determine CME propagation direction correctly.
收录类别SCI
语种英语
WOS记录号WOS:000365310200080
源URL[http://ir.bao.ac.cn/handle/114a11/5511]  
专题国家天文台_太阳物理研究部
作者单位1.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Shandong Univ, Inst Space Sci, Weihai 264209, Peoples R China
5.Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Peoples R China
推荐引用方式
GB/T 7714
Wang, Rui,Liu, Ying D.,Dai, Xinghua,et al. THE ROLE OF ACTIVE REGION CORONAL MAGNETIC FIELD IN DETERMINING CORONAL MASS EJECTION PROPAGATION DIRECTION[J]. ASTROPHYSICAL JOURNAL,2015,814(1).
APA Wang, Rui,Liu, Ying D.,Dai, Xinghua,Yang, Zhongwei,Huang, Chong,&Hu, Huidong.(2015).THE ROLE OF ACTIVE REGION CORONAL MAGNETIC FIELD IN DETERMINING CORONAL MASS EJECTION PROPAGATION DIRECTION.ASTROPHYSICAL JOURNAL,814(1).
MLA Wang, Rui,et al."THE ROLE OF ACTIVE REGION CORONAL MAGNETIC FIELD IN DETERMINING CORONAL MASS EJECTION PROPAGATION DIRECTION".ASTROPHYSICAL JOURNAL 814.1(2015).

入库方式: OAI收割

来源:国家天文台

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