DOI: 10.1002/grl.50336
论文题名: Could the collision of CMEs in the heliosphere be super-elastic? Validation through three-dimensional simulations
作者: Shen F. ; Shen C. ; Wang Y. ; Feng X. ; Xiang C.
刊名: Geophysical Research Letters
ISSN: 0094-9156
EISSN: 1944-8887
出版年: 2013
卷: 40, 期: 8 起始页码: 1457
结束页码: 1461
语种: 英语
英文关键词: Coronal mass ejection
; Interaction
; MHD simulation
; Super-elastic collision
Scopus关键词: Coronal mass ejection
; Interaction
; MHD simulation
; Observational study
; Space weather forecasting
; Super-elastic collision
; Three dimensional simulations
; Three-dimensional MHD simulation
; Ionization of gases
; Kinetic energy
; Kinetics
; Magnetohydrodynamics
; Weather forecasting
; Three dimensional computer graphics
; collision zone
; elastic property
; kinetic energy
; magnetic field
; simulation
; solar wind
; space technology
; three-dimensional flow
英文摘要: 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. Key Points Collision of CMEs in the heliosphere could be super-elastic Magnetic energy is the major source of kinetic energy gain Extra gain of kinetic energy may influence space weather. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877947216&doi=10.1002%2fgrl.50336&partnerID=40&md5=6fc75dbe4c070fc7d0373e1fbe6037b3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6420
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Shen F.,Shen C.,Wang Y.,et al. Could the collision of CMEs in the heliosphere be super-elastic? Validation through three-dimensional simulations[J]. Geophysical Research Letters,2013-01-01,40(8).