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MAGNETIC FIELD RESTRUCTURING ASSOCIATED WITH TWO SUCCESSIVE SOLAR ERUPTIONS
Wang, Rui; Liu, Ying D.; Yang, Zhongwei; Hu, Huidong; Wang, R (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2014
Volume791Issue:2Pages:84
ISSN0004-637X
Language英语
KeywordSun: Activity Sun: Flares Sun: Magnetic Fields
AbstractWe examine two successive flare eruptions (X5.4 and X1.3) on 2012 March 7 in the NOAA active region 11429 and investigate the magnetic field reconfiguration associated with the two eruptions. Using an advanced non-linear force-free field extrapolation method based on the SDO/HMI vector magnetograms, we obtain a stepwise decrease in the magnetic free energy during the eruptions, which is roughly 20%-30% of the energy of the pre-flare phase. We also calculate the magnetic helicity and suggest that the changes of the sign of the helicity injection rate might be associated with the eruptions. Through the investigation of the magnetic field evolution, we find that the appearance of the "implosion" phenomenon has a strong relationship with the occurrence of the first X-class flare. Meanwhile, the magnetic field changes of the successive eruptions with implosion and without implosion were well observed.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4485
Collection空间科学部
Corresponding AuthorWang, R (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Rui,Liu, Ying D.,Yang, Zhongwei,et al. MAGNETIC FIELD RESTRUCTURING ASSOCIATED WITH TWO SUCCESSIVE SOLAR ERUPTIONS[J]. ASTROPHYSICAL JOURNAL,2014,791(2):84.
APA Wang, Rui,Liu, Ying D.,Yang, Zhongwei,Hu, Huidong,&Wang, R .(2014).MAGNETIC FIELD RESTRUCTURING ASSOCIATED WITH TWO SUCCESSIVE SOLAR ERUPTIONS.ASTROPHYSICAL JOURNAL,791(2),84.
MLA Wang, Rui,et al."MAGNETIC FIELD RESTRUCTURING ASSOCIATED WITH TWO SUCCESSIVE SOLAR ERUPTIONS".ASTROPHYSICAL JOURNAL 791.2(2014):84.
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