DOI: 10.1002/2016GL069355
论文题名: Identifying the electron diffusion region in a realistic simulation of Earth's magnetotail
作者: Ashour-Abdalla M. ; Lapenta G. ; Walker R. ; El-Alaoui M. ; Liang H. ; Zhou M. ; Berchem J. ; Goldstein M.L.
刊名: Geophysical Research Letters
ISSN: 0094-9685
EISSN: 1944-9416
出版年: 2016
卷: 43, 期: 12 起始页码: 6005
结束页码: 6011
语种: 英语
英文关键词: magnetotail
; reconnection
; simulation
Scopus关键词: Energy conversion
; Geomagnetism
; Magnetohydrodynamics
; Geomagnetic activities
; Initial and boundary conditions
; Magnetic reconnections
; Magnetotails
; Particle acceleration
; Particle-in-cell simulations
; reconnection
; simulation
; Magnetism
英文摘要: A historic challenge to understanding geomagnetic activity is determining where in Earth's magnetotail magnetic energy is converted into particle energy and heat by magnetic reconnection. Key to unravel this fundamental process is in determining the location and extent of the electron diffusion region (EDR) where the energy conversion is initiated. We have located the EDR during a substorm on 15 February 2008 by using a combination of global magnetohydrodynamic (MHD) and particle-in-cell (PIC) simulations. Solar wind data were used as input into the MHD simulation, which provided the initial and boundary conditions for the PIC calculation. The simulated reconnection rate was episodic with magnetic reconnection occurring every few seconds. The reconnection site moved several Earth radii in a few minutes. A parameter that measures the breakdown of electron gyrotropy about the magnetic field provided the clearest location of the EDR where changes in magnetic topology and particle acceleration are initiated. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983238489&doi=10.1002%2f2016GL069355&partnerID=40&md5=daadef63e270791b158e74ee519abeab
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10648
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: Department of Physics and Astronomy, University of California, Los Angeles, CA, United States
Recommended Citation:
Ashour-Abdalla M.,Lapenta G.,Walker R.,et al. Identifying the electron diffusion region in a realistic simulation of Earth's magnetotail[J]. Geophysical Research Letters,2016-01-01,43(12).