Electron dynamics in two-dimensional asymmetric anti-parallel reconnection

被引：43

作者：

Egedal, J. ^{[1
,2
]}

Le, A. ^{[1
,2
]}

Pritchett, P. L. ^{[3
]}

Daughton, W. ^{[4
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

[2] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICS OF PLASMAS | 2011年 / 18卷 / 10期

关键词：

astrophysical plasma; magnetic reconnection; plasma magnetohydrodynamics; plasma simulation; MAGNETIC RECONNECTION; DAYSIDE MAGNETOPAUSE; LINE;

D O I：

10.1063/1.3646316

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Kinetic simulations and spacecraft observations have documented strong anisotropy in the electron distribution function during magnetic reconnection. The level and role of electron pressure anisotropy is investigated for asymmetric geometries applicable to reconnection in the day-side magnetopause. A previously derived analytic model for the pressure anisotropy is generalized and is applied to the asymmetric geometry. In agreement with the results from a kinetic simulation, the generalized model predicts the strongest pressure anisotropy and parallel electric fields in the in-flow region characterized by low electron pressure. (C) 2011 American Institute of Physics. [doi:10.1063/1.3646316]

引用

页数：8

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