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  4. 中国科学院地球与行星物理重点实验室
Electron acceleration in the near-Earth magnetotail: test particle calculations in electromagnetic fields from two-dimensional hybrid simulations

文献类型：期刊论文

作者Guo, Zhifang1,2; Wu, Mingyu3,4; Du, Aimin1
刊名ASTROPHYSICS AND SPACE SCIENCE
出版日期2017-07-01
卷号362期号:7
关键词Hybrid simulation Magnetotail Betatron acceleration Fermi acceleration Dipolarization Kinetic Alfven waves Wave-particle interaction
ISSN号0004-640X
DOI10.1007/s10509-017-3093-0
文献子类Article
英文摘要Electron acceleration in the near-Earth magnetotail during the substorm period is still an unresolved question. In this paper, by tracing electron trajectories in the dynamically evolving electromagnetic fields obtained from a two-dimensional (2D) global hybrid simulation, we investigate electron acceleration in the near-Earth magnetotail during dipolarization. In our simulation, electrons with energies above several keV can gain energy in the plasma sheet due to the adiabatic acceleration mechanism when these electrons propagate earthward. In the near-Earth magnetotail (about 9-15 RE from the Earth), these electrons can be accelerated by betatron acceleration which is due to the compression of magnetic field associated with dipolarization of magnetotail. Additionally, in the middle and high latitudes of the near-Earth magnetotail, the parallel electric field carrying by kinetic Alfven waves can also accelerate electrons when these electrons bounce between the mirror points. The combination effects of these three acceleration mechanisms can accelerate electrons from several keV to about one hundred keV. Our results indicate that both the large-scale structure and wave-particle interactions need to be taken into account for electron acceleration in the near-Earth magnetotail.
WOS关键词DIPOLARIZATION FRONTS ; PLASMA SHEET ; MAGNETIC RECONNECTION ; DYNAMIC MAGNETOTAIL ; SCALE ; STORM ; TAIL ; SUBSTORMS ; EXPANSION ; CLUSTER
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000405776700005
出版者SPRINGER
资助机构National Basic Research Program of China(2014CB845903 ; National Science Foundation of China(41590851 ; National Natural Science Foundation of China(41504057) ; National Key Basic Research Program of China(41574162) ; 2012CB825604) ; 41674168 ; 41374171 ; 41404129) ; National Basic Research Program of China(2014CB845903 ; National Science Foundation of China(41590851 ; National Natural Science Foundation of China(41504057) ; National Key Basic Research Program of China(41574162) ; 2012CB825604) ; 41674168 ; 41374171 ; 41404129) ; National Basic Research Program of China(2014CB845903 ; National Science Foundation of China(41590851 ; National Natural Science Foundation of China(41504057) ; National Key Basic Research Program of China(41574162) ; 2012CB825604) ; 41674168 ; 41374171 ; 41404129) ; National Basic Research Program of China(2014CB845903 ; National Science Foundation of China(41590851 ; National Natural Science Foundation of China(41504057) ; National Key Basic Research Program of China(41574162) ; 2012CB825604) ; 41674168 ; 41374171 ; 41404129)
源URL[http://ir.iggcas.ac.cn/handle/132A11/61862]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Guo, Zhifang
作者单位1.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Univ Sci & Technol China, CAS Key Lab Geospace Environm, Dept Geophys & Planetary Sci, Hefei, Anhui, Peoples R China
4.Collaborat Innovat Ctr Astronaut Sci & Technol, Harbin, Heilongjiang, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Zhifang,Wu, Mingyu,Du, Aimin. Electron acceleration in the near-Earth magnetotail: test particle calculations in electromagnetic fields from two-dimensional hybrid simulations[J]. ASTROPHYSICS AND SPACE SCIENCE,2017,362(7).
APA Guo, Zhifang,Wu, Mingyu,&Du, Aimin.(2017).Electron acceleration in the near-Earth magnetotail: test particle calculations in electromagnetic fields from two-dimensional hybrid simulations.ASTROPHYSICS AND SPACE SCIENCE,362(7).
MLA Guo, Zhifang,et al."Electron acceleration in the near-Earth magnetotail: test particle calculations in electromagnetic fields from two-dimensional hybrid simulations".ASTROPHYSICS AND SPACE SCIENCE 362.7(2017).

入库方式： OAI收割

来源：地质与地球物理研究所

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