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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
Source PublicationASTROPHYSICAL JOURNAL
2015-06-01
Volume805Issue:2
DOI10.1088/0004-637X/805/2/114
Contribution Rank第3完成单位
Indexed BySCI
KeywordMagnetohydrodynamics (Mhd) Shock Waves Sun: Coronal Mass Ejections (Cmes) Sun: Magnetic Fields
Abstract

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.

Funding ProjectNational Basic Research Program of China[2012CB825600] ; National Basic Research Program of China[2011CB811406] ; Shandong Province Natural Science Foundation[ZR2012AQ016] ; Program 973[2011CB811403] ; Program 973[2013CBA01503] ; NSFC [11273055] ; NSFC [11333007] ; CAS grant[XDB09040202]
Funding OrganizationNational Basic Research Program of China[2012CB825600, 2011CB811406] ; Shandong Province Natural Science Foundation[ZR2012AQ016] ; Program 973[2011CB811403, 2013CBA01503] ; NSFC [11273055, 11333007] ; CAS grant[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
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000356715400029
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXTREME-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
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6266
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.School of Tourism and Geography, Yunnan Normal University, Kunming, Yunnan 650031, China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
Recommended Citation
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).
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