Spacecraft Observations of Oblique Electron Beams Breaking the Frozen-In Law During Asymmetric Reconnection

被引：19
作者：
Egedal, J. [1 ]
Le, A. [2 ]
Daughton, W. [2 ]
Wetherton, B. [1 ]
Cassak, P. A. [3 ]
Burch, J. L. [4 ]
Lavraud, B. [5 ]
Dorelli, J. [6 ]
Gershman, D. J. [6 ]
Avanov, L. A. [6 ]
机构：
[1] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[3] West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA
[4] Southwest Res Inst, San Antonio, TX 78238 USA
[5] Univ Toulouse, Inst Rech Astrophys & Planetol, UMR 5277, Toulouse, France
[6] NASA Goddard Space Flight Ctr, Heliophys Sci Div, Greenbelt, MD 20771 USA
来源：
PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 05期
基金：
美国国家科学基金会;
关键词：
MAGNETIC RECONNECTION; DIFFUSION REGION; MAGNETOPAUSE RECONNECTION; GUIDE FIELD; MAGNETOTAIL; ACCELERATION; MMS;
D O I：
10.1103/PhysRevLett.120.055101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Fully kinetic simulations of asymmetric magnetic reconnection reveal the presence of magnetic-field-aligned beams of electrons flowing toward the topological magnetic x line. Within the similar to 6d(e) electron-diffusion region, the beams become oblique to the local magnetic field, providing a unique signature of the electron-diffusion region where the electron frozen-in law is broken. The numerical predictions are confirmed by in situ Magnetospheric Multiscale spacecraft observations during asymmetric reconnection at Earth's dayside magnetopause.
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页数：5
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