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Numerical experiments on the evolution in coronal magnetic configurations including a filament in response to the change in the photosphere
Wang, HJ1; Liu, SQ1; Gong, JC1; Lin J(林隽)2; Wang, HJ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2015-03
卷号15期号:3页码:363-375
DOI10.1088/1674-4527/15/3/006
产权排序第2完成单位
收录类别SCI
关键词Sun: Eruptions Sun: Magnetic Fields Magnetohydrodynamics (Mhd) Numerical Experiments
摘要We investigate equilibrium height of a flux rope, and its internal equilibrium in a realistic plasma environment by carrying out numerical simulations of the evolution of systems including a current-carrying flux rope. We find that the equilibrium height of a flux rope is approximately described by a power-law function of the relative strength of the background field. Our simulations indicate that the flux rope can escape more easily from a weaker background field. This further confirms that a catastrophe in the magnetic configuration of interest can be triggered by a decrease in strength of the background field. Our results show that it takes some time to reach internal equilibrium depending on the initial state of the flux rope. The plasma flow inside the flux rope due to the adjustment for the internal equilibrium of the flux rope remains small and does not last very long when the initial state of the flux rope commences from the stable branch of the theoretical equilibrium curve. This work also confirms the influence of the initial radius of the flux rope in its evolution; the results indicate that a flux rope with a larger initial radius erupts more easily. In addition, by using a realistic plasma environment and a much higher resolution in our simulations, we notice some different characteristics compared to previous studies in Forbes.
项目资助者National Basic Research Program of China (973 program) [2012CB825600, 2011CB811406, 2011CB811403, 2013CBA01503] ; Shandong Province Natural Science Foundation [ZR 2012AQ016] ; National Natural Science Foundation of China [11273055, 11333007] ; Chinese Academy of Sciences [KJCX2-EW-T07, XDB09040202]
语种英语
学科领域Science & Technology - Other Topics
文章类型Article
ISSN1674-4527
URL查看原文
WOS记录号WOS:000350680800006
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
关键词[WOS]RADIATION MAGNETOHYDRODYNAMICS CODE ; 2 SPACE DIMENSIONS ; MASS EJECTIONS ; ASTROPHYSICAL FLOWS ; FLUX-ROPE ; HYDRODYNAMIC ALGORITHMS ; CATASTROPHE MODEL ; SOLAR ATMOSPHERE ; ERUPTIVE FLARES ; ZEUS-2D
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6272
专题太阳物理研究组
通讯作者Wang, HJ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
作者单位1.Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
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Wang, HJ,Liu, SQ,Gong, JC,et al. Numerical experiments on the evolution in coronal magnetic configurations including a filament in response to the change in the photosphere[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(3):363-375.
APA Wang, HJ,Liu, SQ,Gong, JC,Lin J,&Wang, HJ .(2015).Numerical experiments on the evolution in coronal magnetic configurations including a filament in response to the change in the photosphere.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(3),363-375.
MLA Wang, HJ,et al."Numerical experiments on the evolution in coronal magnetic configurations including a filament in response to the change in the photosphere".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.3(2015):363-375.
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