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NUMERICAL EXPERIMENTS OF WAVE-LIKE PHENOMENA CAUSED BY THE DISRUPTION OF AN UNSTABLE MAGNETIC CONFIGURATION
Wang HJ(汪红娟)1,2; Shen CC(沈呈彩)1,2; Lin J(林隽)1,3; Wang, HJ (reprint author), Chinese Acad Sci, Natl Astron Observ China, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
Source PublicationASTROPHYSICAL JOURNAL
2009-08-01
Volume700Issue:2Pages:1716-1731
DOI10.1088/0004-637X/700/2/1716
Contribution Rank第1完成单位
Indexed BySCI
KeywordMhd Shock Waves Sun: Coronal Mass Ejections Sun: Flares Sun: Magnetic Fields
AbstractThe origin of the Moreton wave observed in the chromosphere and the EIT wave observed in the corona during the eruption remains an active research subject. We investigate numerically in this work the evolutionary features of the magnetic configuration that includes a current-carrying flux rope, which is used to model the filament, after the loss of equilibrium in the system takes place in a catastrophic fashion. Rapid motions of the flux rope following the catastrophe invoke the velocity vortices behind the rope, and may also invoke slow-and fast-mode shocks in front of the rope. The velocity vortices at each side of the flux rope propagate roughly horizontally away from the area where they are produced, and both shocks expand toward the flank of the flux rope. The fast shock may eventually reach the bottom boundary and produce two echoes moving back into the corona, but the slow one and the vortices totally decay somewhere in the lower corona before arriving of the bottom boundary. The interaction of the fast shock with the boundary leads to disturbance that accounts for the Moreton wave observed in Ha, and the disturbance in the corona caused by the slow shock and the velocity vortices should account for the EIT wave whose speed is about 40% that of the Moreton wave. The implication of these results to the observed correlation of the type II radio burst to the fast-and the slow-mode shocks and that of EIT waves to coronal mass ejections and flares has also been discussed.
Funding OrganizationProgram 973 [2006CB806303] ; NSFC [40636031, 10873030] ; CAS [KJCX2- YW-T04] ; NASA [NNX07AL72G]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-637X
URL查看原文
Archive Date2009-09-24
WOS IDWOS:000268098100066
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; RADIATION MAGNETOHYDRODYNAMICS CODE ; 2 SPACE DIMENSIONS ; II RADIO-BURSTS ; SOLAR-FLARES ; ASTROPHYSICAL FLOWS ; FLUX ROPE ; HYDRODYNAMIC ALGORITHMS ; SOHO/EIT OBSERVATIONS ; ERUPTIVE FLARES
Citation statistics
Cited Times:75[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6133
Collection太阳物理研究组
Corresponding AuthorWang, HJ (reprint author), Chinese Acad Sci, Natl Astron Observ China, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
Affiliation1.National Astronomical Observatories of China/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.Graduate School of Chinese Academy of Sciences, Beijing 100039, China
3.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang HJ,Shen CC,Lin J,et al. NUMERICAL EXPERIMENTS OF WAVE-LIKE PHENOMENA CAUSED BY THE DISRUPTION OF AN UNSTABLE MAGNETIC CONFIGURATION[J]. ASTROPHYSICAL JOURNAL,2009,700(2):1716-1731.
APA Wang HJ,Shen CC,Lin J,&Wang, HJ .(2009).NUMERICAL EXPERIMENTS OF WAVE-LIKE PHENOMENA CAUSED BY THE DISRUPTION OF AN UNSTABLE MAGNETIC CONFIGURATION.ASTROPHYSICAL JOURNAL,700(2),1716-1731.
MLA Wang HJ,et al."NUMERICAL EXPERIMENTS OF WAVE-LIKE PHENOMENA CAUSED BY THE DISRUPTION OF AN UNSTABLE MAGNETIC CONFIGURATION".ASTROPHYSICAL JOURNAL 700.2(2009):1716-1731.
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