globalchange  > 科学计划与规划
DOI: 10.1002/2016GL069034
论文题名:
Kinetic signatures of the region surrounding the X line in asymmetric (magnetopause) reconnection
作者: Shay M.A.; Phan T.D.; Haggerty C.C.; Fujimoto M.; Drake J.F.; Malakit K.; Cassak P.A.; Swisdak M.
刊名: Geophysical Research Letters
ISSN: 0094-9035
EISSN: 1944-8766
出版年: 2016
卷: 43, 期:9
起始页码: 4145
结束页码: 4154
语种: 英语
英文关键词: magnetic reconnection ; magnetopause
Scopus关键词: Distribution functions ; Electric fields ; Electric lines ; Electron temperature ; Electrons ; Magnetic fields ; Magnetism ; Magnetopause ; Magnetosphere ; Plasma density ; Plasma simulation ; Asymptotic state ; Electron diffusion ; Electron distribution function ; Magnetic field reversal ; Magnetic field strengths ; Magnetic reconnections ; Parallel electric fields ; Particle-in-cell simulations ; Magnetoplasma ; electric field ; electron ; heating ; ion ; magnetic field ; magnetopause ; magnetosphere ; temperature effect
英文摘要: Kinetic particle-in-cell simulations are used to identify signatures of the electron diffusion region (EDR) and its surroundings during asymmetric magnetic reconnection. A "shoulder" in the sunward pointing normal electric field (EN > 0) at the reconnection magnetic field reversal is a good indicator of the EDR and is caused by magnetosheath electron meandering orbits in the vicinity of the X line. Earthward of the X line, electrons accelerated by EN form strong currents and crescent-shaped distribution functions in the plane perpendicular to B. Just downstream of the X line, parallel electric fields create field-aligned crescent electron distribution functions. In the immediate upstream magnetosheath, magnetic field strength, plasma density, and perpendicular electron temperatures are lower than the asymptotic state. In the magnetosphere inflow region, magnetosheath ions intrude resulting in an Earthward pointing electric field and parallel heating of magnetospheric particles. Many of the above properties persist with a guide field of at least unity. © 2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969942260&doi=10.1002%2f2016GL069034&partnerID=40&md5=8dcc23d431163f1d5c6c6261a806dad3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9998
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, DE, United States

Recommended Citation:
Shay M.A.,Phan T.D.,Haggerty C.C.,et al. Kinetic signatures of the region surrounding the X line in asymmetric (magnetopause) reconnection[J]. Geophysical Research Letters,2016-01-01,43(9).
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