DOI: 10.1002/2014GL061586
论文题名: On the electron diffusion region in planar, asymmetric, systems
作者: Hesse M. ; Aunai N. ; Sibeck D. ; Birn J.
刊名: Geophysical Research Letters
ISSN: 0094-9462
EISSN: 1944-9193
出版年: 2014
卷: 41, 期: 24 起始页码: 8673
结束页码: 8680
语种: 英语
英文关键词: diffusion
; electron
; magnetopause
; reconnection
Scopus关键词: Diffusion
; Electric fields
; Magnetopause
; Electric field components
; Electric field patterns
; Electron diffusion
; Electron distributions
; Electron pressures
; Particle-in-cell simulations
; Planar configurations
; Reconnection
; Electrons
; analytical method
; diffusion
; electric field
; electron
; flux measurement
; magnetosphere
; simulation
英文摘要: Particle-in-cell simulations and analytical theory are employed to study the electron diffusion region in asymmetric reconnection, which is taking place in planar configurations without a guide field. The analysis presented here focuses on the nature of the local reconnection electric field and on differences from symmetric configurations. Further emphasis is on the complex structure of the electron distribution in the diffusion region, which is generated by the mixing of particles from different sources. We find that the electric field component that is directly responsible for flux transport is provided not by electron pressure-based, "quasi-viscous," terms but by inertial terms. The quasi-viscous component is shown to be critical in that it is necessary to sustain the required overall electric field pattern in the immediate neighborhood of the reconnection X line. Key Points Magnetic reconnection in asymmetric systems is much more complicatedThe reconnection electric field is given by electron inertiaThe electron distribution function structure is critical ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921838098&doi=10.1002%2f2014GL061586&partnerID=40&md5=0bc6411de03ec7d45981ce6a0e29bbf5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6726
Appears in Collections: 气候减缓与适应
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作者单位: Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Hesse M.,Aunai N.,Sibeck D.,et al. On the electron diffusion region in planar, asymmetric, systems[J]. Geophysical Research Letters,2014-01-01,41(24).