NSSC OpenIR  > 空间科学部
MAGNETOHYDRODYNAMIC SIMULATION OF A SIGMOID ERUPTION OF ACTIVE REGION 11283
Jiang, Chaowei1; Feng, Xueshang1; Wu, S. T.2; Hu, Qiang2; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2013-07-10
Volume771Issue:2Pages:L30
ISSN0004-637X
Language英语
KeywordMagnetic Fields Magnetohydrodynamics (Mhd) Methods: Numerical Sun: Coronal Mass Ejections (Cmes) Sun: Flares
AbstractCurrent magnetohydrodynamic (MHD) simulations of the initiation of solar eruptions are still commonly carried out with idealized magnetic field models, whereas the realistic coronal field prior to eruptions can possibly be reconstructed from the observable photospheric field. Using a nonlinear force-free field extrapolation prior to a sigmoid eruption in AR 11283 as the initial condition in an MHD model, we successfully simulate the realistic initiation process of the eruption event, as is confirmed by a remarkable resemblance to the SDO/AIA observations. Analysis of the pre-eruption field reveals that the envelope flux of the sigmoidal core contains a coronal null and furthermore the flux rope is prone to a torus instability. Observations suggest that reconnection at the null cuts overlying tethers and likely triggers the torus instability of the flux rope, which results in the eruption. This kind of simulation demonstrates the capability of modeling the realistic solar eruptions to provide the initiation process.; Current magnetohydrodynamic (MHD) simulations of the initiation of solar eruptions are still commonly carried out with idealized magnetic field models, whereas the realistic coronal field prior to eruptions can possibly be reconstructed from the observable photospheric field. Using a nonlinear force-free field extrapolation prior to a sigmoid eruption in AR 11283 as the initial condition in an MHD model, we successfully simulate the realistic initiation process of the eruption event, as is confirmed by a remarkable resemblance to the SDO/AIA observations. Analysis of the pre-eruption field reveals that the envelope flux of the sigmoidal core contains a coronal null and furthermore the flux rope is prone to a torus instability. Observations suggest that reconnection at the null cuts overlying tethers and likely triggers the torus instability of the flux rope, which results in the eruption. This kind of simulation demonstrates the capability of modeling the realistic solar eruptions to provide the initiation process.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1490
Collection空间科学部
Corresponding Author北京8701信箱
Affiliation1.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, SIGMA Weather Grp, Beijing 100190, Peoples R China
2.Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35899 USA
Recommended Citation
GB/T 7714
Jiang, Chaowei,Feng, Xueshang,Wu, S. T.,et al. MAGNETOHYDRODYNAMIC SIMULATION OF A SIGMOID ERUPTION OF ACTIVE REGION 11283[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,771(2):L30.
APA Jiang, Chaowei,Feng, Xueshang,Wu, S. T.,Hu, Qiang,&北京8701信箱.(2013).MAGNETOHYDRODYNAMIC SIMULATION OF A SIGMOID ERUPTION OF ACTIVE REGION 11283.ASTROPHYSICAL JOURNAL LETTERS,771(2),L30.
MLA Jiang, Chaowei,et al."MAGNETOHYDRODYNAMIC SIMULATION OF A SIGMOID ERUPTION OF ACTIVE REGION 11283".ASTROPHYSICAL JOURNAL LETTERS 771.2(2013):L30.
Files in This Item: Download All
File Name/Size DocType Version Access License
20137712L30.pdf(1304KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jiang, Chaowei]'s Articles
[Feng, Xueshang]'s Articles
[Wu, S. T.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jiang, Chaowei]'s Articles
[Feng, Xueshang]'s Articles
[Wu, S. T.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jiang, Chaowei]'s Articles
[Feng, Xueshang]'s Articles
[Wu, S. T.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 20137712L30.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.