Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection

Yu V. Khotyaintsev; D. B. Graham; K. Steinvall; L. Alm; A. Vaivads; A. Johlander; C. Norgren; W. Li; A. Divin; H. S. Fu; K. J. Hwang; J. L. Burch; N. Ahmadi; O. Le Contel; D. J. Gershman; C. T. Russell; R. B. Torbert

doi:10.1103/PhysRevLett.124.045101

Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection

Yu V. Khotyaintsev
, D. B. Graham
, K. Steinvall
, L. Alm
, A. Vaivads
, A. Johlander
, C. Norgren
, W. Li
, A. Divin
, H. S. Fu
, K. J. Hwang
, J. L. Burch
, N. Ahmadi
, O. Le Contel
, D. J. Gershman
, C. T. Russell
, R. B. Torbert

Swedish Institute of Space Physics
KTH Royal Institute of Technology
University of Helsinki
University of Bergen
National Space Science Center
Saint Petersburg State University
Beihang University
Southwest Research Institute
University of Colorado Boulder
NASA Goddard Space Flight Center
University of California, Los Angeles
University of New Hampshire Durham

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

Abstract

We report electrostatic Debye-scale turbulence developing within the diffusion region of asymmetric magnetopause reconnection with a moderate guide field using observations by the Magnetospheric Multiscale mission. We show that Buneman waves and beam modes cause efficient and fast thermalization of the reconnection electron jet by irreversible phase mixing, during which the jet kinetic energy is transferred into thermal energy. Our results show that the reconnection diffusion region in the presence of a moderate guide field is highly turbulent, and that electrostatic turbulence plays an important role in electron heating.

Original language	English
Article number	045101
Journal	Physical Review Letters
Volume	124
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.124.045101
Publication status	Published - 30 Jan 2020

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10.1103/PhysRevLett.124.045101

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Khotyaintsev, Y. V., Graham, D. B., Steinvall, K., Alm, L., Vaivads, A., Johlander, A., Norgren, C., Li, W., Divin, A., Fu, H. S., Hwang, K. J., Burch, J. L., Ahmadi, N., Le Contel, O., Gershman, D. J., Russell, C. T., & Torbert, R. B. (2020). Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection. Physical Review Letters, 124(4), Article 045101. https://doi.org/10.1103/PhysRevLett.124.045101

@article{529a0c56b69f4848973aad1603af1b0d,

title = "Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection",

abstract = "We report electrostatic Debye-scale turbulence developing within the diffusion region of asymmetric magnetopause reconnection with a moderate guide field using observations by the Magnetospheric Multiscale mission. We show that Buneman waves and beam modes cause efficient and fast thermalization of the reconnection electron jet by irreversible phase mixing, during which the jet kinetic energy is transferred into thermal energy. Our results show that the reconnection diffusion region in the presence of a moderate guide field is highly turbulent, and that electrostatic turbulence plays an important role in electron heating.",

author = "Khotyaintsev, \{Yu V.\} and Graham, \{D. B.\} and K. Steinvall and L. Alm and A. Vaivads and A. Johlander and C. Norgren and W. Li and A. Divin and Fu, \{H. S.\} and Hwang, \{K. J.\} and Burch, \{J. L.\} and N. Ahmadi and \{Le Contel\}, O. and Gershman, \{D. J.\} and Russell, \{C. T.\} and Torbert, \{R. B.\}",

note = "Publisher Copyright: {\textcopyright} 2020 us. {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = jan,

day = "30",

doi = "10.1103/PhysRevLett.124.045101",

language = "English",

volume = "124",

journal = "Physical Review Letters",

issn = "0031-9007",

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Khotyaintsev, YV, Graham, DB, Steinvall, K, Alm, L, Vaivads, A, Johlander, A, Norgren, C, Li, W, Divin, A, Fu, HS, Hwang, KJ, Burch, JL, Ahmadi, N, Le Contel, O, Gershman, DJ, Russell, CT & Torbert, RB 2020, 'Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection', Physical Review Letters, vol. 124, no. 4, 045101. https://doi.org/10.1103/PhysRevLett.124.045101

TY - JOUR

T1 - Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection

AU - Khotyaintsev, Yu V.

AU - Graham, D. B.

AU - Steinvall, K.

AU - Alm, L.

AU - Vaivads, A.

AU - Johlander, A.

AU - Norgren, C.

AU - Li, W.

AU - Divin, A.

AU - Fu, H. S.

AU - Hwang, K. J.

AU - Burch, J. L.

AU - Ahmadi, N.

AU - Le Contel, O.

AU - Gershman, D. J.

AU - Russell, C. T.

AU - Torbert, R. B.

PY - 2020/1/30

Y1 - 2020/1/30

N2 - We report electrostatic Debye-scale turbulence developing within the diffusion region of asymmetric magnetopause reconnection with a moderate guide field using observations by the Magnetospheric Multiscale mission. We show that Buneman waves and beam modes cause efficient and fast thermalization of the reconnection electron jet by irreversible phase mixing, during which the jet kinetic energy is transferred into thermal energy. Our results show that the reconnection diffusion region in the presence of a moderate guide field is highly turbulent, and that electrostatic turbulence plays an important role in electron heating.

AB - We report electrostatic Debye-scale turbulence developing within the diffusion region of asymmetric magnetopause reconnection with a moderate guide field using observations by the Magnetospheric Multiscale mission. We show that Buneman waves and beam modes cause efficient and fast thermalization of the reconnection electron jet by irreversible phase mixing, during which the jet kinetic energy is transferred into thermal energy. Our results show that the reconnection diffusion region in the presence of a moderate guide field is highly turbulent, and that electrostatic turbulence plays an important role in electron heating.

U2 - 10.1103/PhysRevLett.124.045101

DO - 10.1103/PhysRevLett.124.045101

M3 - Article

C2 - 32058767

AN - SCOPUS:85079545223

SN - 0031-9007

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 045101

ER -

Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection

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