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Electron Bernstein waves driven by electron crescents near the electron diffusion region
Li, W Y;   Graham, D B;   Khotyaintsev, Yu V;   Vaivads, A;   Andre, 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;   Lavraud, B;   Plasc
Department天气室
Source PublicationNature communications
2020
Volume11Issue:1Pages:141
DOI10.1038/s41467-019-13920-w
Language英语
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 wavesare 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 electrondistributions, 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.

Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7292
Collection空间科学部
Recommended Citation
GB/T 7714
Li, W Y; Graham, D B; Khotyaintsev, Yu V; Vaivads, A; Andre, 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; Lavraud, B; Plasc. Electron Bernstein waves driven by electron crescents near the electron diffusion region[J]. Nature communications,2020,11(1):141.
APA Li, W Y; Graham, D B; Khotyaintsev, Yu V; Vaivads, A; Andre, 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; Lavraud, B; Plasc.(2020).Electron Bernstein waves driven by electron crescents near the electron diffusion region.Nature communications,11(1),141.
MLA Li, W Y; Graham, D B; Khotyaintsev, Yu V; Vaivads, A; Andre, 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; Lavraud, B; Plasc."Electron Bernstein waves driven by electron crescents near the electron diffusion region".Nature communications 11.1(2020):141.
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