Numerical experiments on the evolution in coronal magnetic configurations including a filament in response to the change in the photosphere
文献类型：期刊论文
| 作者 | Wang, HJ1 ; Liu, SQ1; Gong, JC1; Lin J(林隽)2
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2015-03 |
| 卷号 | 15期号:3页码:363-375 |
| ISSN号 | 1674-4527 |
| 关键词 | Sun: eruptions Sun: magnetic fields magnetohydrodynamics (MHD) numerical experiments |
| 通讯作者 | Wang, HJ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China. |
| 产权排序 | 第二完成单位 |
| 英文摘要 | 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. |
| 学科主题 | Science & Technology - Other Topics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 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 |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/1674-4527/15/3/006/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000350680800006 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6272]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 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 |
| 推荐引用方式 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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来源：云南天文台
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