Could the collision of CMEs in the heliosphere be super‒elastic? Validation through three‒dimensional simulations

	Could the collision of CMEs in the heliosphere be super‒elastic? Validation through three‒dimensional simulations
	Fang Shen ; Chenglong Shen ; Yuming Wang ; Xueshang Feng ; Changqing Xiang
刊名	Geophysical Research Letters
	2013
卷号	40 期号:8 页码:1457-1461
关键词	Coronal mass ejection Interaction MHD simulation Super-elastic collision
ISSN号	1944-8007
通讯作者	北京8701信箱
中文摘要	Though coronal mass ejections (CMEs) are magnetized fully ionized gases, a recent observational study of a CME collision event in 2008 November has suggested that their behavior in the heliosphere is like elastic balls, and their collision is probably superelastic [C. Shen et al., 2012]. If this is true, this finding has an obvious impact on the space weather forecasting because the direction and velocity of CMEs may change. To verify it, we numerically study the event through three‒dimensional MHD simulations. The nature of CMEs' collision is examined by comparing two cases. In one case, the two CMEs collide as observed, but in the other, they do not. Results show that the collision leads to extra kinetic energy gain by 3–4% of the initial kinetic energy of the two CMEs. It firmly proves that the collision of CMEs could be superelastic.
学科主题	空间物理
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1537]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Fang Shen,Chenglong Shen,Yuming Wang,et al. Could the collision of CMEs in the heliosphere be super‒elastic? Validation through three‒dimensional simulations[J]. Geophysical Research Letters,2013,40(8):1457-1461.
APA	Fang Shen,Chenglong Shen,Yuming Wang,Xueshang Feng,&Changqing Xiang.(2013).Could the collision of CMEs in the heliosphere be super‒elastic? Validation through three‒dimensional simulations.Geophysical Research Letters,40(8),1457-1461.
MLA	Fang Shen,et al."Could the collision of CMEs in the heliosphere be super‒elastic? Validation through three‒dimensional simulations".Geophysical Research Letters 40.8(2013):1457-1461.