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

W. Y. Li; D. B. Graham; Yu V. Khotyaintsev; A. Vaivads; M. André; K. Min; K. Liu; B. B. Tang; C. Wang; K. Fujimoto; C. Norgren; S. Toledo-Redondo; P. A. Lindqvist; R. E. Ergun; R. B. Torbert; A. C. Rager; J. C. Dorelli; D. J. Gershman; B. L. Giles; B. Lavraud; F. Plaschke; W. Magnes; O. Le Contel; C. T. Russell; J. L. Burch

doi:10.1038/s41467-019-13920-w

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

W. Y. Li
, D. B. Graham
, Yu V. Khotyaintsev
, A. Vaivads
, M. André
, K. Min
, K. Liu
, B. B. Tang
, C. Wang
, K. Fujimoto
, C. Norgren
, S. Toledo-Redondo
, P. A. Lindqvist
, R. E. Ergun
, R. B. Torbert
, A. C. Rager
, J. C. Dorelli
, D. J. Gershman
, B. L. Giles
, B. Lavraud

F. Plaschke, W. Magnes, O. Le Contel, C. T. Russell, J. L. Burch

National Space Science Center
Swedish Institute of Space Physics
Macau University of Science and Technology
KTH Royal Institute of Technology
Chungnam National University
the Southern University of Science and Technology
Beihang University
University of Bergen
IRAP/CNRS
Universidad de Murcia
University of Colorado Boulder
University of New Hampshire Durham
Catholic University of America
NASA Goddard Space Flight Center
University of Maryland
Space Research Institute
Université Paris-Saclay
Institute of Geophysics and Planetary Physics, University of California
Southwest Research Institute

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	141
Journal	Nature Communications
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41467-019-13920-w
Publication status	Published - 1 Dec 2020
Externally published	Yes

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Li, W. Y., Graham, D. B., Khotyaintsev, Y. V., Vaivads, A., André, M., Min, K., Liu, K., Tang, B. B., Wang, C., Fujimoto, K., Norgren, C., Toledo-Redondo, S., Lindqvist, P. A., Ergun, R. E., Torbert, R. B., Rager, A. C., Dorelli, J. C., Gershman, D. J., Giles, B. L., ... Burch, J. L. (2020). Electron Bernstein waves driven by electron crescents near the electron diffusion region. Nature Communications, 11(1), Article 141. https://doi.org/10.1038/s41467-019-13920-w

@article{7de517bb13784eef9a622a18356a4e56,

title = "Electron Bernstein waves driven by electron crescents near the electron diffusion region",

abstract = "The Magnetospheric Multiscale (MMS) spacecraft encounter an electron diffusion region (EDR) of asymmetric magnetic reconnection at Earth{\textquoteright}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.",

author = "Li, \{W. Y.\} and Graham, \{D. B.\} and Khotyaintsev, \{Yu V.\} and A. Vaivads and M. Andr{\'e} and K. Min and K. Liu and Tang, \{B. B.\} and C. Wang and K. Fujimoto and C. Norgren and S. Toledo-Redondo and Lindqvist, \{P. A.\} and Ergun, \{R. E.\} and Torbert, \{R. B.\} and Rager, \{A. C.\} and Dorelli, \{J. C.\} and Gershman, \{D. J.\} and Giles, \{B. L.\} and B. Lavraud and F. Plaschke and W. Magnes and \{Le Contel\}, O. and Russell, \{C. T.\} and Burch, \{J. L.\}",

note = "Publisher Copyright: {\textcopyright} 2020, The Author(s).",

year = "2020",

month = dec,

day = "1",

doi = "10.1038/s41467-019-13920-w",

language = "English",

volume = "11",

journal = "Nature Communications",

issn = "2041-1723",

number = "1",

}

Li, WY, Graham, DB, Khotyaintsev, YV, Vaivads, A, André, M, Min, K, Liu, K, Tang, BB, Wang, C, Fujimoto, K, Norgren, C, Toledo-Redondo, S, Lindqvist, PA, Ergun, RE, Torbert, RB, Rager, AC, Dorelli, JC, Gershman, DJ, Giles, BL, Lavraud, B, Plaschke, F, Magnes, W, Le Contel, O, Russell, CT & Burch, JL 2020, 'Electron Bernstein waves driven by electron crescents near the electron diffusion region', Nature Communications, vol. 11, no. 1, 141. https://doi.org/10.1038/s41467-019-13920-w

TY - JOUR

T1 - Electron Bernstein waves driven by electron crescents near the electron diffusion region

AU - Li, W. Y.

AU - Graham, D. B.

AU - Khotyaintsev, Yu V.

AU - Vaivads, A.

AU - André, M.

AU - Min, K.

AU - Liu, K.

AU - Tang, B. B.

AU - Wang, C.

AU - Fujimoto, K.

AU - Norgren, C.

AU - Toledo-Redondo, S.

AU - Lindqvist, P. A.

AU - Ergun, R. E.

AU - Torbert, R. B.

AU - Rager, A. C.

AU - Dorelli, J. C.

AU - Gershman, D. J.

AU - Giles, B. L.

AU - Lavraud, B.

AU - Plaschke, F.

AU - Magnes, W.

AU - Le Contel, O.

AU - Russell, C. T.

AU - Burch, J. L.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - 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.

AB - 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.

U2 - 10.1038/s41467-019-13920-w

DO - 10.1038/s41467-019-13920-w

M3 - Article

C2 - 31919351

AN - SCOPUS:85077697342

SN - 2041-1723

VL - 11

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 141

ER -

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

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