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Testing a solar coronal magnetic field extrapolation code with the Titov-Demoulin magnetic flux rope model
Jiang, Chao-Wei; Feng, Xue-Shang; 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
2016
Volume16Issue:1Pages:15
ISSN1674-4527
Language英语
KeywordMagnetic Fields Magnetohydrodynamics (Mhd) Methods: Numerical Sun: Corona
AbstractIn the solar corona, the magnetic flux rope is believed to be a fundamental structure that accounts for magnetic free energy storage and solar eruptions. Up to the present, the extrapolation of the magnetic field from boundary data has been the primary way to obtain fully three-dimensional magnetic information about the corona. As a result, the ability to reliably recover the coronal magnetic flux rope is important for coronal field extrapolation. In this paper, our coronal field extrapolation code is examined with an analytical magnetic flux rope model proposed by Titov & Demoulin, which consists of a bipolar magnetic configuration holding a semi-circular line-tied flux rope in force-free equilibrium. By only using the vector field at the bottom boundary as input, we test our code with the model in a representative range of parameter space and find that the model field can be reconstructed with high accuracy. In particular, the magnetic topological interfaces formed between the flux rope and the surrounding arcade, i.e., the "hyperbolic flux tube" and "bald patch separatrix surface," are also reliably reproduced. By this test, we demonstrate that our CESE-MHD-NLFFF code can be applied to recovering the magnetic flux rope in the solar corona as long as the vector magnetogram satisfies the force-free constraints.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5684
Collection空间科学部
Corresponding AuthorJiang, 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,Jiang, CW . Testing a solar coronal magnetic field extrapolation code with the Titov-Demoulin magnetic flux rope model[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(1):15.
APA Jiang, Chao-Wei,Feng, Xue-Shang,&Jiang, CW .(2016).Testing a solar coronal magnetic field extrapolation code with the Titov-Demoulin magnetic flux rope model.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(1),15.
MLA Jiang, Chao-Wei,et al."Testing a solar coronal magnetic field extrapolation code with the Titov-Demoulin magnetic flux rope model".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.1(2016):15.
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