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Title: Kinetic Structure of the Electron Diffusion Region in Antiparallel Magnetic Reconnection

Abstract

Strong electron pressure anisotropy has been observed upstream of electron diffusion regions during reconnection in Earth's magnetotail and kinetic simulations. For collisionless antiparallel reconnection, we find that the anisotropy drives the electron current in the electron diffusion region, and that this current is insensitive to the reconnection electric field. Reconstruction of the electron distribution function within this region at enhanced resolutions reveals its highly structured nature and the mechanism by which the pressure anisotropy sets the structure of the region.

Authors:
; ;  [1];  [2];  [3]
  1. Department of Physics, and Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  3. Space Science Center and Physics Department, University of New Hampshire, Durham, New Hampshire 03824 (United States)
Publication Date:
OSTI Identifier:
21532300
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevLett.106.065002; (c) 2011 American Institute of Physics; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANISOTROPY; DIFFUSION; DISTRIBUTION FUNCTIONS; ELECTRIC FIELDS; ELECTRONS; MAGNETIC RECONNECTION; MAGNETOTAIL; SIMULATION; EARTH ATMOSPHERE; EARTH MAGNETOSPHERE; ELEMENTARY PARTICLES; FERMIONS; FUNCTIONS; LEPTONS

Citation Formats

Ng, J, Egedal, J, Le, A, Daughton, W, and Chen, L -J. Kinetic Structure of the Electron Diffusion Region in Antiparallel Magnetic Reconnection. United States: N. p., 2011. Web. doi:10.1103/PHYSREVLETT.106.065002.
Ng, J, Egedal, J, Le, A, Daughton, W, & Chen, L -J. Kinetic Structure of the Electron Diffusion Region in Antiparallel Magnetic Reconnection. United States. doi:10.1103/PHYSREVLETT.106.065002.
Ng, J, Egedal, J, Le, A, Daughton, W, and Chen, L -J. Fri . "Kinetic Structure of the Electron Diffusion Region in Antiparallel Magnetic Reconnection". United States. doi:10.1103/PHYSREVLETT.106.065002.
@article{osti_21532300,
title = {Kinetic Structure of the Electron Diffusion Region in Antiparallel Magnetic Reconnection},
author = {Ng, J and Egedal, J and Le, A and Daughton, W and Chen, L -J},
abstractNote = {Strong electron pressure anisotropy has been observed upstream of electron diffusion regions during reconnection in Earth's magnetotail and kinetic simulations. For collisionless antiparallel reconnection, we find that the anisotropy drives the electron current in the electron diffusion region, and that this current is insensitive to the reconnection electric field. Reconstruction of the electron distribution function within this region at enhanced resolutions reveals its highly structured nature and the mechanism by which the pressure anisotropy sets the structure of the region.},
doi = {10.1103/PHYSREVLETT.106.065002},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 6,
volume = 106,
place = {United States},
year = {2011},
month = {2}
}