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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
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2015-03
Volume15Issue:3Pages:363-375
DOI10.1088/1674-4527/15/3/006
Contribution Rank第2完成单位
Indexed BySCI
KeywordSun: Eruptions Sun: Magnetic Fields Magnetohydrodynamics (Mhd) Numerical Experiments
Abstract

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.

Funding ProjectNational Basic Research Program of China (973 program)[2012CB825600] ; National Basic Research Program of China (973 program)[2011CB811406] ; National Basic Research Program of China (973 program)[2011CB811403] ; National Basic Research Program of China (973 program)[2013CBA01503] ; Shandong Province Natural Science Foundation[ZR 2012AQ016] ; National Natural Science Foundation of China[11273055] ; Natural Science Foundation of China[11333007] ; Chinese Academy of Sciences[KJCX2-EW-T07] ; Chinese Academy of Sciences[XDB09040202]
Funding OrganizationNational 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]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS IDWOS:000350680800006
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS KeywordRADIATION MAGNETOHYDRODYNAMICS CODE ; 2 SPACE DIMENSIONS ; MASS EJECTIONS ; ASTROPHYSICAL FLOWS ; FLUX-ROPE ; HYDRODYNAMIC ALGORITHMS ; CATASTROPHE MODEL ; SOLAR ATMOSPHERE ; ERUPTIVE FLARES ; ZEUS-2D
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6272
Collection太阳物理研究组
Corresponding AuthorWang, HJ
Affiliation1.Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
Recommended Citation
GB/T 7714
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.(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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