NUMERICAL EXPERIMENTS OF WAVE-LIKE PHENOMENA CAUSED BY THE DISRUPTION OF AN UNSTABLE MAGNETIC CONFIGURATION

	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
刊名	ASTROPHYSICAL JOURNAL
	2009-08-01
卷号	700 期号:2 页码:1716-1731
关键词	MHD shock waves Sun: coronal mass ejections Sun: flares Sun: magnetic fields
ISSN号	0004-637X
通讯作者	Wang, HJ (reprint author), Chinese Acad Sci, Natl Astron Observ China, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
产权排序	第一完成单位
英文摘要	The 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.
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 ; RADIATION MAGNETOHYDRODYNAMICS CODE ; 2 SPACE DIMENSIONS ; II RADIO-BURSTS ; SOLAR-FLARES ; ASTROPHYSICAL FLOWS ; FLUX ROPE ; HYDRODYNAMIC ALGORITHMS ; SOHO/EIT OBSERVATIONS ; ERUPTIVE FLARES
收录类别	SCI
原文出处	http://iopscience.iop.org/0004-637X/700/2/1716/
语种	英语
WOS记录号	WOS:000268098100066
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6133]
专题	云南天文台_太阳物理研究组
作者单位	1.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
推荐引用方式 GB/T 7714	Wang HJ,Shen CC,Lin J. 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.(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.