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MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8
文献类型：期刊论文
| 作者 | Bernhard Kliem1,2,3,4; Su, YN5; van Ballegooijen, AA5; DeLuca, EE5 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2013-12-20 |
| 卷号 | 779期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | magnetohydrodynamics (MHD) Sun: corona Sun: coronal mass ejections (CMEs) Sun: filaments Sun: flares Sun: magnetic fields prominences |
| 通讯作者 | Bernhard Kliem (reprint author), Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany. |
| 产权排序 | 第三完成单位 |
| 英文摘要 | The structure of the coronal magnetic field prior to eruptive processes and the conditions for the onset of eruption are important issues that can be addressed through studying the magnetohydrodynamic (MHD) stability and evolution of nonlinear force-free field (NLFFF) models. This paper uses data-constrained NLFFF models of a solar active region (AR) that erupted on 2010 April 8 as initial conditions in MHD simulations. These models, constructed with the techniques of flux rope insertion and magnetofrictional relaxation (MFR), include a stable, an approximately marginally stable, and an unstable configuration. The simulations confirm previous related results of MFR runs, particularly that stable flux rope equilibria represent key features of the observed pre-eruption coronal structure very well, and that there is a limiting value of the axial flux in the rope for the existence of stable NLFFF equilibria. The specific limiting value is located within a tighter range, due to the sharper discrimination between stability and instability by the MHD description. The MHD treatment of the eruptive configuration yields a very good agreement with a number of observed features, like the strongly inclined initial rise path and the close temporal association between the coronal mass ejection and the onset of flare reconnection. Minor differences occur in the velocity of flare ribbon expansion and in the further evolution of the inclination; these can be eliminated through refined simulations. We suggest that the slingshot effect of horizontally bent flux in the source region of eruptions can contribute significantly to the inclination of the rise direction. Finally, we demonstrate that the onset criterion, formulated in terms of a threshold value for the axial flux in the rope, corresponds very well to the threshold of the torus instability in the considered AR. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CORONAL MASS EJECTIONS ; ACTIVE-REGION 10953 ; POLAR-CROWN PROMINENCE ; HYPERBOLIC FLUX TUBES ; MAGNETIC-FIELD ; ROPE ERUPTION ; FILAMENT ; SUN ; FLARE ; EXTRAPOLATION |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0004-637X/779/2/129/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000328187200039 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6216]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 作者单位 | 1.Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam, Germany 2.Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK 3.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China 4.College of Science, George Mason University, Fairfax, VA 22030, USA 5.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA |
| 推荐引用方式 GB/T 7714 | Bernhard Kliem,Su, YN,van Ballegooijen, AA,et al. MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8[J]. ASTROPHYSICAL JOURNAL,2013,779(2). |
| APA | Bernhard Kliem,Su, YN,van Ballegooijen, AA,&DeLuca, EE.(2013).MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8.ASTROPHYSICAL JOURNAL,779(2). |
| MLA | Bernhard Kliem,et al."MAGNETOHYDRODYNAMIC MODELING OF THE SOLAR ERUPTION ON 2010 APRIL 8".ASTROPHYSICAL JOURNAL 779.2(2013). |
入库方式： OAI收割
来源：云南天文台
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