NSSC OpenIR  > 空间科学部
Reconstruction of a Large-scale Pre-flare Coronal Current Sheet Associated with a Homologous X-shaped Flare
Jiang, Chaowei; Yan, Xiaoli; Feng, Xueshang; Duan, Aiying; Hu, Qiang; Zuo, Pingbing; Wang, Yi; Jiang, CW (reprint author), Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen 518055, Peoples R China.; Jiang, CW (reprint author), Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35899 USA.; Jiang, CW (reprint author), Chinese Acad Sci, SIGMA Weather Grp, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.
作者部门空间科学部
2017
发表期刊ASTROPHYSICAL JOURNAL
ISSN0004-637X
卷号850期号:1页码:8
摘要As a fundamental magnetic structure in the solar corona, electric current sheets (CSs) can form either prior to or during a solar flare, and they are essential for magnetic energy dissipation in the solar corona because they enable magnetic reconnection. However, the static reconstruction of a CS is rare, possibly due to limitations that are inherent in the available coronal field extrapolation codes. Here we present the reconstruction of a large-scale preflare CS in solar active region. 11967 using an MHD-relaxation model constrained by the SDO/HMI vector magnetogram. The CS is associated with a set of peculiar homologous flares that exhibit unique X-shaped ribbons and loops occurring in a quadrupolar magnetic configuration. This is evidenced by an 'X' shape, formed from the field lines traced from the CS to the photosphere. This nearly reproduces the shape of the observed flare ribbons, suggesting that the flare is a product of the dissipation of the CS via reconnection. The CS forms in a hyperbolic flux tube, which is an intersection of two quasi-separatrix layers. The recurrence of the X-shaped flares might be attributed to the repetitive formation and dissipation of the CS, as driven by the photospheric footpoint motions. These results demonstrate the power of a data-constrained MHD model in reproducing a CS in the corona as well as providing insight into the magnetic mechanism of solar flares.
项目资助者National Natural Science Foundation of China [41574170, 41574171, 41531073, 41374176, 41231068, 11373066] ; Shenzhen Technology Project [JCYJ20170307150645407] ; Specialized Research Fund for State Key Laboratories ; NSF [AGS-1650854]
关键词Magnetic Fields Magnetohydrodynamics (Mhd) Methods: Numerical Sun: Corona Sun: Flares
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6077
专题空间科学部
通讯作者Jiang, CW (reprint author), Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen 518055, Peoples R China.; Jiang, CW (reprint author), Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35899 USA.; Jiang, CW (reprint author), Chinese Acad Sci, SIGMA Weather Grp, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Jiang, Chaowei,Yan, Xiaoli,Feng, Xueshang,et al. Reconstruction of a Large-scale Pre-flare Coronal Current Sheet Associated with a Homologous X-shaped Flare[J]. ASTROPHYSICAL JOURNAL,2017,850(1):8.
APA Jiang, Chaowei.,Yan, Xiaoli.,Feng, Xueshang.,Duan, Aiying.,Hu, Qiang.,...&Jiang, CW .(2017).Reconstruction of a Large-scale Pre-flare Coronal Current Sheet Associated with a Homologous X-shaped Flare.ASTROPHYSICAL JOURNAL,850(1),8.
MLA Jiang, Chaowei,et al."Reconstruction of a Large-scale Pre-flare Coronal Current Sheet Associated with a Homologous X-shaped Flare".ASTROPHYSICAL JOURNAL 850.1(2017):8.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
201785018.pdf(2701KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Jiang, Chaowei]的文章
[Yan, Xiaoli]的文章
[Feng, Xueshang]的文章
百度学术
百度学术中相似的文章
[Jiang, Chaowei]的文章
[Yan, Xiaoli]的文章
[Feng, Xueshang]的文章
必应学术
必应学术中相似的文章
[Jiang, Chaowei]的文章
[Yan, Xiaoli]的文章
[Feng, Xueshang]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。