Shock waves standing in the middle- and high-latitude magnetosheath from global MHD simulations

	Shock waves standing in the middle- and high-latitude magnetosheath from global MHD simulations
	Guo, X. C.; Wang, C.; Sun, T. R.; Hu, Y. Q.
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2011
卷号	116 页码:A03206
ISSN号	0148-0227
通讯作者	Guo, XC (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China.
中文摘要	Standing shock waves (SSWs) are found to exist in the middle-and high-latitude magnetosheath through the global magnetohydrodynamic simulations. There are two (or one) SSWs for constant northward (or southward) interplanetary magnetic field (IMF); they extend into the magnetosheath region and further interact with the bow shock. Because of the extension of SSWs into the interplanetary space, especially when IMF turns southward, an indented bow shock emerges in front of the magnetosphere. The SSWs are excited by the indentations of the magnetopause in the supermagnetosonic solar wind flows in the magnetosheath; for northward IMF, one of the indentations is located in the cusp region and the other corresponds to the neutral point in the tailward of the cusp; for southward IMF, the indentation simply locates in the cusp region. We examine the Rankine-Hugoniot relations across the shock fronts and find the numerical model results are consistent with theoretical predictions.
英文摘要	Standing shock waves (SSWs) are found to exist in the middle-and high-latitude magnetosheath through the global magnetohydrodynamic simulations. There are two (or one) SSWs for constant northward (or southward) interplanetary magnetic field (IMF); they extend into the magnetosheath region and further interact with the bow shock. Because of the extension of SSWs into the interplanetary space, especially when IMF turns southward, an indented bow shock emerges in front of the magnetosphere. The SSWs are excited by the indentations of the magnetopause in the supermagnetosonic solar wind flows in the magnetosheath; for northward IMF, one of the indentations is located in the cusp region and the other corresponds to the neutral point in the tailward of the cusp; for southward IMF, the indentation simply locates in the cusp region. We examine the Rankine-Hugoniot relations across the shock fronts and find the numerical model results are consistent with theoretical predictions.
学科主题	空间物理
收录类别	SCI
资助信息	NNSFC [40804044, 40921063, 40831060]; Specialized Research Fund for State Key Laboratories of China
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/3270]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Guo, X. C.,Wang, C.,Sun, T. R.,et al. Shock waves standing in the middle- and high-latitude magnetosheath from global MHD simulations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2011,116:A03206.
APA	Guo, X. C.,Wang, C.,Sun, T. R.,&Hu, Y. Q..(2011).Shock waves standing in the middle- and high-latitude magnetosheath from global MHD simulations.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,116,A03206.
MLA	Guo, X. C.,et al."Shock waves standing in the middle- and high-latitude magnetosheath from global MHD simulations".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 116(2011):A03206.