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CONTRIBUTION OF VELOCITY VORTICES AND FAST SHOCK REFLECTION AND REFRACTION TO THE FORMATION OF EUV WAVES IN SOLAR ERUPTIONS
Wang, HJ1; Liu, SQ1; Gong, JC1; Wu, N2; Lin J(林隽)3; Wang, HJ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2015-06-01
卷号805期号:2
DOI10.1088/0004-637X/805/2/114
产权排序第3完成单位
收录类别SCI
关键词Magnetohydrodynamics (Mhd) Shock Waves Sun: Coronal Mass Ejections (Cmes) Sun: Magnetic Fields
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.
项目资助者National Basic Research Program of China [2012CB825600, 2011CB811406] ; Shandong Province Natural Science Foundation [ZR2012AQ016] ; Program 973 [2011CB811403, 2013CBA01503] ; NSFC [11273055, 11333007] ; CAS grant [XDB09040202]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000356715400029
WOS研究方向Astronomy & Astrophysics
WOS类目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
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被引频次:6[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/114a53/6266
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.School of Tourism and Geography, Yunnan Normal University, Kunming, Yunnan 650031, China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
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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,&Wang, HJ .(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).
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