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Constraints on electron temperature anisotropies in sheath regions of interplanetary shocks
Xu, Dan; Chen, Tao; Xu, D (reprint author), State Key Lab Space Weather, Beijing, Peoples R China.
Department空间科学部
Source PublicationPLANETARY AND SPACE SCIENCE
2012
Volume62Issue:1Pages:100-103
ISSN0032-0633
Language英语
KeywordSheath Region Whistler Anisotropy Instability Fire Hose Instability Temperature Anisotropy Ip Sheath Region
AbstractA statistical study of electron data observed within magnetosheath regions after interplanetary (IP) shocks driven by magnetic clouds has been performed to understand the constraints on temperature anisotropies of suprathermal electron component due to collective effects of electron wave-particle interactions with plasma micro-instabilities. Results show that although shock heating and acceleration, downstream selective reflection and leakage into upstream region, and wave-particle scattering all can contribute to suprathermal electron temperature anisotropy in downstream sheath regions of IP shocks, the consequent whistler anisotropy instabilities triggered by the sufficiently large temperature anisotropies can constrain temperature anisotropy increase to a more nearly isotropic distribution as plasma beta increases. (C) 2011 Elsevier Ltd. All rights reserved.; A statistical study of electron data observed within magnetosheath regions after interplanetary (IP) shocks driven by magnetic clouds has been performed to understand the constraints on temperature anisotropies of suprathermal electron component due to collective effects of electron wave-particle interactions with plasma micro-instabilities. Results show that although shock heating and acceleration, downstream selective reflection and leakage into upstream region, and wave-particle scattering all can contribute to suprathermal electron temperature anisotropy in downstream sheath regions of IP shocks, the consequent whistler anisotropy instabilities triggered by the sufficiently large temperature anisotropies can constrain temperature anisotropy increase to a more nearly isotropic distribution as plasma beta increases. (C) 2011 Elsevier Ltd. All rights reserved.
Indexed BySCI ; EI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3112
Collection空间科学部
Corresponding AuthorXu, D (reprint author), State Key Lab Space Weather, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Xu, Dan,Chen, Tao,Xu, D . Constraints on electron temperature anisotropies in sheath regions of interplanetary shocks[J]. PLANETARY AND SPACE SCIENCE,2012,62(1):100-103.
APA Xu, Dan,Chen, Tao,&Xu, D .(2012).Constraints on electron temperature anisotropies in sheath regions of interplanetary shocks.PLANETARY AND SPACE SCIENCE,62(1),100-103.
MLA Xu, Dan,et al."Constraints on electron temperature anisotropies in sheath regions of interplanetary shocks".PLANETARY AND SPACE SCIENCE 62.1(2012):100-103.
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