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A magnetic bald-patch flare in solar active region 11117
Jiang, Chao-Wei; Feng, Xue-Shang; Wu, Shi-Tsan; Hu, Qiang; Jiang, CW (reprint author), Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen 518055, Peoples R China.; Jiang, CW (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, SIGMA Weather Grp, Beijing 100190, Peoples R China.
Department空间科学部
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2017
Volume17Issue:9
ISSN1674-4527
Language英语
KeywordSun: Flares Sun: Corona Magnetic Fields Magnetohydrodynamics (Mhd) Methods: Numerical
AbstractWith SDO observations and a data-constrained magnetohydrodynamics (MHD) model, we identify a confined multi-ribbon flare that occurred on 2010 October 25 in solar active region 11117 as a magnetic bald patch (BP) flare with strong evidence. From the photospheric magnetic field observed by SDO/HMI, we find there are indeed magnetic BPs on the polarity inversion lines (PILs) which match parts of the flare ribbons. From the 3D coronal magnetic field derived from an MHD relaxation model constrained by the vector magnetograms, we find strikingly good agreement of the BP separatrix surface (BPSS) footpointswith the flare ribbons, and the BPSS itself with the hot flaring loop system. Moreover, the triggering of the BP flare can be attributed to a small flux emergence under the lobe of the BPSS, and the relevant change of coronal magnetic field through the flare is reproduced well by the pre-flare and post-flare MHD solutions, which match the corresponding pre-and post-flare AIA observations, respectively. Our work contributes to the study of non-typical flares that constitute the majority of solar flares but which cannot be explained by the standard flare model.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6064
Collection空间科学部
Corresponding AuthorJiang, CW (reprint author), Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen 518055, Peoples R China.; Jiang, CW (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, SIGMA Weather Grp, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Jiang, Chao-Wei,Feng, Xue-Shang,Wu, Shi-Tsan,et al. A magnetic bald-patch flare in solar active region 11117[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(9).
APA Jiang, Chao-Wei,Feng, Xue-Shang,Wu, Shi-Tsan,Hu, Qiang,Jiang, CW ,&Jiang, CW .(2017).A magnetic bald-patch flare in solar active region 11117.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(9).
MLA Jiang, Chao-Wei,et al."A magnetic bald-patch flare in solar active region 11117".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.9(2017).
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