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HOW DID A MAJOR CONFINED FLARE OCCUR IN SUPER SOLAR ACTIVE REGION 12192?
Jiang, Chaowei; Wu, S. T.; Yurchyshyn, Vasyl; Wang, Haiming; Feng, Xueshang; Hu, Qiang; Jiang, CW (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, SIGMA Weather Grp, Beijing 100190, Peoples R China.; Jiang, CW (reprint author), Univ Alabama, Ctr Space Plasma & Aeronom Res, Huntsville, AL 35899 USA.
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2016
Volume828Issue:1Pages:62
ISSN0004-637X
Language英语
KeywordGalaxies: Magnetic Fields Magnetohydrodynamics (Mhd) Methods: Numerical Sun: Corona Sun: Flares
AbstractWe study the physical mechanism of a major X-class solar flare that occurred in the super NOAA active region (AR) 12192 using data-driven numerical magnetohydrodynamic (MHD) modeling complemented with observations. With the evolving magnetic fields observed at the solar surface as bottom boundary input, we drive an MHD system to evolve self-consistently in correspondence with the realistic coronal evolution. During a two-day time interval, the modeled coronal field has been slowly stressed by the photospheric field evolution, which gradually created a large-scale coronal current sheet, i.e., a narrow layer with intense current, in the core of the AR. The current layer was successively enhanced until it became so thin that a tether-cutting reconnection between the sheared magnetic arcades was set in, which led to a flare. The modeled reconnecting field lines and their footpoints match well the observed hot flaring loops and the flare ribbons, respectively, suggesting that the model has successfully "reproduced" the macroscopic magnetic process of the flare. In particular, with simulation, we explained why this event is a confined eruption-the consequence of the reconnection is a shared arcade instead of a newly formed flux rope. We also found a much weaker magnetic implosion effect compared to many other X-class flares.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5595
Collection空间科学部
Corresponding AuthorJiang, CW (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, SIGMA Weather Grp, Beijing 100190, Peoples R China.; Jiang, CW (reprint author), Univ Alabama, Ctr Space Plasma & Aeronom Res, Huntsville, AL 35899 USA.
Recommended Citation
GB/T 7714
Jiang, Chaowei,Wu, S. T.,Yurchyshyn, Vasyl,et al. HOW DID A MAJOR CONFINED FLARE OCCUR IN SUPER SOLAR ACTIVE REGION 12192?[J]. ASTROPHYSICAL JOURNAL,2016,828(1):62.
APA Jiang, Chaowei.,Wu, S. T..,Yurchyshyn, Vasyl.,Wang, Haiming.,Feng, Xueshang.,...&Jiang, CW .(2016).HOW DID A MAJOR CONFINED FLARE OCCUR IN SUPER SOLAR ACTIVE REGION 12192?.ASTROPHYSICAL JOURNAL,828(1),62.
MLA Jiang, Chaowei,et al."HOW DID A MAJOR CONFINED FLARE OCCUR IN SUPER SOLAR ACTIVE REGION 12192?".ASTROPHYSICAL JOURNAL 828.1(2016):62.
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