CONTRIBUTION OF VELOCITY VORTICES AND FAST SHOCK REFLECTION AND REFRACTION TO THE FORMATION OF EUV WAVES IN SOLAR ERUPTIONS
文献类型：期刊论文
| 作者 | Wang, HJ1 ; Liu, SQ1; Gong, JC1; Wu, N2; Lin J(林隽)3
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2015-06-01 |
| 卷号 | 805期号:2 |
| 关键词 | magnetohydrodynamics (MHD) shock waves Sun: coronal mass ejections (CMEs) Sun: magnetic fields |
| ISSN号 | 0004-637X |
| 产权排序 | 第三完成单位 |
| 通讯作者 | Wang, HJ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China. |
| 英文摘要 | We numerically study the detailed evolutionary features of the wave-like disturbance and its propagation in the eruption. This work is a follow-up to Wang et al., using significantly upgraded new simulations. We focus on the contribution of the velocity vortices and the fast shock reflection and refraction in the solar corona to the formation of the EUV waves. Following the loss of equilibrium in the coronal magnetic structure, the flux rope exhibits rapid motions and invokes the fast-mode shock at the front of the rope, which then produces a type II radio burst. The expansion of the fast shock, which is associated with outward motion, takes place in various directions, and the downward expansion shows the reflection and the refraction as a result of the non-uniform background plasma. The reflected component of the fast shock propagates upward and the refracted component propagates downward. As the refracted component reaches the boundary surface, a weak echo is excited. The Moreton wave is invoked as the fast shock touches the bottom boundary, so the Moreton wave lags the type II burst. A secondary echo occurs in the area where reflection of the fast shock encounters the slow-mode shock, and the nearby magnetic field lines are further distorted because of the interaction between the secondary echo and the velocity vortices. Our results indicate that the EUV wave may arise from various processes that are revealed in the new simulations. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EXTREME-ULTRAVIOLET WAVE ; CORONAL MASS EJECTION ; RADIATION MAGNETOHYDRODYNAMICS CODE ; 2 SPACE DIMENSIONS ; II RADIO-BURSTS ; ASTROPHYSICAL FLOWS ; HYDRODYNAMIC ALGORITHMS ; SOHO/EIT OBSERVATIONS ; NUMERICAL EXPERIMENTS ; SDO/AIA OBSERVATIONS |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0004-637X/805/2/114/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000356715400029 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6266]  |
| 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.School of Tourism and Geography, Yunnan Normal University, Kunming, Yunnan 650031, China 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China |
| 推荐引用方式 GB/T 7714 | Wang, HJ,Liu, SQ,Gong, JC,et al. CONTRIBUTION OF VELOCITY VORTICES AND FAST SHOCK REFLECTION AND REFRACTION TO THE FORMATION OF EUV WAVES IN SOLAR ERUPTIONS[J]. ASTROPHYSICAL JOURNAL,2015,805(2). |
| APA | Wang, HJ,Liu, SQ,Gong, JC,Wu, N,&Lin J.(2015).CONTRIBUTION OF VELOCITY VORTICES AND FAST SHOCK REFLECTION AND REFRACTION TO THE FORMATION OF EUV WAVES IN SOLAR ERUPTIONS.ASTROPHYSICAL JOURNAL,805(2). |
| MLA | Wang, HJ,et al."CONTRIBUTION OF VELOCITY VORTICES AND FAST SHOCK REFLECTION AND REFRACTION TO THE FORMATION OF EUV WAVES IN SOLAR ERUPTIONS".ASTROPHYSICAL JOURNAL 805.2(2015). |
入库方式： OAI收割
来源：云南天文台
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