Electron Bernstein waves driven by electron crescents near the electron diffusion region

Li，W. Y.1,2,3; Graham，D. B.2; Khotyaintsev，Yu V.2; Vaivads，A.4; André，M.2; Min，K.5; Liu，K.6; Tang，B. B.1; Wang，C.1; Fujimoto，K.7; Norgren，C.8; Toledo-Redondo，S.9,10; Lindqvist，P. A.4; Ergun，R. E.11; Torbert，R. B.12; Rager，A. C.13,14; Dorelli，J. C.14; Gershman，D. J.14,15; Giles，B. L.14; Lavraud，B.9; Plaschke，F.16; Magnes，W.16; Le Contel，O.17; Russell，C. T.18; Burch，J. L.19

2020-12-01

10.1038/s41467-019-13920-w

Nature Communications   影响因子和分区

2041-1723

2041-1723

The Magnetospheric Multiscale (MMS) spacecraft encounter an electron diffusion region (EDR) of asymmetric magnetic reconnection at Earth’s magnetopause. The EDR is characterized by agyrotropic electron velocity distributions on both sides of the neutral line. Various types of plasma waves are produced by the magnetic reconnection in and near the EDR. Here we report large-amplitude electron Bernstein waves (EBWs) at the electron-scale boundary of the Hall current reversal. The finite gyroradius effect of the outflow electrons generates the crescent-shaped agyrotropic electron distributions, which drive the EBWs. The EBWs propagate toward the central EDR. The amplitude of the EBWs is sufficiently large to thermalize and diffuse electrons around the EDR. The EBWs contribute to the cross-field diffusion of the electron-scale boundary of the Hall current reversal near the EDR.

SCI

英语

NI论文

其他

Ministry of Economy and Competitiveness (MINECO) of Spain[FIS2017-90102-R]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:000511897900002

NATURE PUBLISHING GROUP

2-s2.0-85077697342

Scopus

1.State Key Laboratory of Space Weather,National Space Science Center,Chinese Academy of Sciences,Beijing,100190,China
2.Swedish Institute of Space Physics,Uppsala,SE-75121,Sweden
3.State Key Laboratory of Lunar and Planetary Sciences,Macau University of Science and Technology,Macao
4.Division of Space and Plasma Physics,School of Electrical Engineering and Computer Science,KTH Royal Institute of Technology,Stockholm,SE-11428,Sweden
5.Department of Astronomy and Space Science,Chungnam National University,Daejeon,34134,South Korea
6.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518055,China
7.School of Space and Environment,Beihang University,Beijing,100191,China
8.Department of Physics and Technology,University of Bergen,Bergen,5020,Norway
9.Institut de Recherche en Astrophysique et Planétologie,Université de Toulouse,CNRS,UPS,CNES,Toulouse,31028,France
10.Department of Electromagnetism and Electronics,University of Murcia,Murcia,30003,Spain
11.Laboratory of Atmospheric and Space Physics,University of Colorado,Boulder,80303,United States
12.Space Science Center,University of New Hampshire,Durham,03824,United States
13.Catholic University of America,Washington,20064,United States
14.NASA Goddard Space Flight Center,Greenbelt,20771,United States
15.Department of Astronomy,University of Maryland,College Park,20742,United States
16.Space Research Institute,Austrian Academy of Sciences,Graz,8042,Austria
17.Laboratoire de Physique des Plasmas,CNRS/Ecole Polytechnique/Sorbonne Université/Univ. Paris Sud/Observatoire de Paris,Paris,75252,France
18.Department of Earth and Space Sciences,University of California,Los Angeles,90095,United States
19.Southwest Research Institute,San Antonio,78238,United States

Li，W. Y.,Graham，D. B.,Khotyaintsev，Yu V.,et al. Electron Bernstein waves driven by electron crescents near the electron diffusion region[J]. Nature Communications,2020,11(1).

Li，W. Y..,Graham，D. B..,Khotyaintsev，Yu V..,Vaivads，A..,André，M..,...&Burch，J. L..(2020).Electron Bernstein waves driven by electron crescents near the electron diffusion region.Nature Communications,11(1).

Li，W. Y.,et al."Electron Bernstein waves driven by electron crescents near the electron diffusion region".Nature Communications 11.1(2020).