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Turn on the super-elastic collision nature of coronal mass ejections through low approaching speed
Fang Shen; Yuming Wang,; Chenglong Shen; Xueshang Feng
Department空间科学部
Source PublicationScientific Reports
2016
Volume6Pages:19576
ISSN2045-2322
Language英语
AbstractIt has been proved from the observations and numerical simulations that the collision between solar coronal mass ejections (CMEs), the largest plasmoids in the heliosphere, could be super-elastic. This finding suggests that the CMEs’ magnetic energy and thermal energy could be converted into kinetic energy through a more efficient way. However CME collisions are not always super-elastic, which means that this distinct property of plasmoids is probably excited conditionally. As the first attempt, we carry out a series of three-dimensional numerical experiments, and establish a diagram showing the dependence of the collision nature on the CME speed and k-number, the ratio of the CME’s kinetic energy to the CME’s total energy. It is found that the super-elastic nature of CMEs appears at the relatively low approaching speed, and most of the previous case studies are in agreement with this diagram. Our study firmly advances the understanding of the super-elastic property of plasmoids, and does give us new clues to deeply understand why and how the magnetic energy and/or thermal energy of the colliding plasmoids can be converted into kinetic energy in such an efficient way.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5272
Collection空间科学部
Recommended Citation
GB/T 7714
Fang Shen,Yuming Wang,,Chenglong Shen,et al. Turn on the super-elastic collision nature of coronal mass ejections through low approaching speed[J]. Scientific Reports,2016,6:19576.
APA Fang Shen,Yuming Wang,,Chenglong Shen,&Xueshang Feng.(2016).Turn on the super-elastic collision nature of coronal mass ejections through low approaching speed.Scientific Reports,6,19576.
MLA Fang Shen,et al."Turn on the super-elastic collision nature of coronal mass ejections through low approaching speed".Scientific Reports 6(2016):19576.
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