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Statistical Study of Magnetic Topology for Eruptive and Confined Solar Flares
Cui, Yanmei; Wang, Haimin; Xu, Yan; Liu, Siqing; Cui, YM (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China.; Cui, YM (reprint author), New Jersey Inst Technol, Space Weather Res Lab, Ctr Solar Terr Res, Newark, NJ 07102 USA.
Department空间环境部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2018
Volume123Issue:3Pages:1704-1714
ISSN2169-9380
Language英语
AbstractLarge flares and halo coronal mass ejections (CMEs) can often cause strong space environment disturbances and sequently a series of space environment effects. The X-class flares associated with halo CMEs are particular prone to these effects. In this paper, 58 X-class flares were collected and studied with the source locations in 30 degrees from the disk center, which were observed from 1996 to 2015. Among these events, 48 flares were associated with CMEs and defined as "eruptive" events. The other 10 flares without CMEs were defined as "confined" flares. By comparing the properties of flares and associated magnetic fields for the two sets of samples, we found the following: (1) magnetic free energy and overlying transverse fields play important roles in producing solar eruptions. Eruptive flares with high-speed CMEs tend to occur in active regions with more free energy and larger decay index. (2) CME speeds are affected by magnetic free energy, which are described by parameters of the unsigned magnetic flux, the area of polarity inversion region, and the strength of transverse fields in the low altitude. These parameters have moderate positive correlations with CME speeds.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6309
Collection空间环境部
Corresponding AuthorCui, YM (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China.; Cui, YM (reprint author), New Jersey Inst Technol, Space Weather Res Lab, Ctr Solar Terr Res, Newark, NJ 07102 USA.
Recommended Citation
GB/T 7714
Cui, Yanmei,Wang, Haimin,Xu, Yan,et al. Statistical Study of Magnetic Topology for Eruptive and Confined Solar Flares[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(3):1704-1714.
APA Cui, Yanmei,Wang, Haimin,Xu, Yan,Liu, Siqing,Cui, YM ,&Cui, YM .(2018).Statistical Study of Magnetic Topology for Eruptive and Confined Solar Flares.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(3),1704-1714.
MLA Cui, Yanmei,et al."Statistical Study of Magnetic Topology for Eruptive and Confined Solar Flares".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.3(2018):1704-1714.
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