Electron Jet Detected by MMS at Dipolarization Front

C. M. Liu; H. S. Fu; A. Vaivads; Y. V. Khotyaintsev; D. J. Gershman; K. J. Hwang; Z. Z. Chen; D. Cao; Y. Xu; J. Yang; F. Z. Peng; S. Y. Huang; J. L. Burch; B. L. Giles; R. E. Ergun; C. T. Russell; P. A. Lindqvist; O. Le Contel

doi:10.1002/2017GL076509

Electron Jet Detected by MMS at Dipolarization Front

C. M. Liu
, H. S. Fu
, A. Vaivads
, Y. V. Khotyaintsev
, D. J. Gershman
, K. J. Hwang
, Z. Z. Chen
, D. Cao
, Y. Xu
, J. Yang
, F. Z. Peng
, S. Y. Huang
, J. L. Burch
, B. L. Giles
, R. E. Ergun
, C. T. Russell
, P. A. Lindqvist
, O. Le Contel

Beihang University
Swedish Institute of Space Physics
NASA Goddard Space Flight Center
Southwest Research Institute
Wuhan University
University of Colorado Boulder
Institute of Geophysics and Planetary Physics, University of California
KTH Royal Institute of Technology
LPP

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Using MMS high-resolution measurements, we present the first observation of fast electron jet (V_e ~2,000 km/s) at a dipolarization front (DF) in the magnetotail plasma sheet. This jet, with scale comparable to the DF thickness (~ 0.9 d_i), is primarily in the tangential plane to the DF current sheet and mainly undergoes the E × B drift motion; it contributes significantly to the current system at the DF, including a localized ring-current that can modify the DF topology. Associated with this fast jet, we observed a persistent normal electric field, strong lower hybrid drift waves, and strong energy conversion at the DF. Such strong energy conversion is primarily attributed to the electron-jet-driven current (E ⋅ j_e ≈ 2 E ⋅ j_i), rather than the ion current suggested in previous studies.

langue originale	Anglais
Pages (de - à)	556-564
Nombre de pages	9
journal	Geophysical Research Letters
Volume	45
Numéro de publication	2
Les DOIs	https://doi.org/10.1002/2017GL076509
état	Publié - 28 janv. 2018
Modification externe	Oui

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10.1002/2017GL076509

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Liu, C. M., Fu, H. S., Vaivads, A., Khotyaintsev, Y. V., Gershman, D. J., Hwang, K. J., Chen, Z. Z., Cao, D., Xu, Y., Yang, J., Peng, F. Z., Huang, S. Y., Burch, J. L., Giles, B. L., Ergun, R. E., Russell, C. T., Lindqvist, P. A., & Le Contel, O. (2018). Electron Jet Detected by MMS at Dipolarization Front. Geophysical Research Letters, 45(2), 556-564. https://doi.org/10.1002/2017GL076509

@article{2af7b42ed04c46bfa0570163e6539c26,

title = "Electron Jet Detected by MMS at Dipolarization Front",

abstract = "Using MMS high-resolution measurements, we present the first observation of fast electron jet (Ve \textasciitilde{}2,000 km/s) at a dipolarization front (DF) in the magnetotail plasma sheet. This jet, with scale comparable to the DF thickness (\textasciitilde{} 0.9 di), is primarily in the tangential plane to the DF current sheet and mainly undergoes the E × B drift motion; it contributes significantly to the current system at the DF, including a localized ring-current that can modify the DF topology. Associated with this fast jet, we observed a persistent normal electric field, strong lower hybrid drift waves, and strong energy conversion at the DF. Such strong energy conversion is primarily attributed to the electron-jet-driven current (E ⋅ je ≈ 2 E ⋅ ji), rather than the ion current suggested in previous studies.",

keywords = "LHD waves, dipolarization front, electric field, electron current, electron jet, energy conversion",

author = "Liu, \{C. M.\} and Fu, \{H. S.\} and A. Vaivads and Khotyaintsev, \{Y. V.\} and Gershman, \{D. J.\} and Hwang, \{K. J.\} and Chen, \{Z. Z.\} and D. Cao and Y. Xu and J. Yang and Peng, \{F. Z.\} and Huang, \{S. Y.\} and Burch, \{J. L.\} and Giles, \{B. L.\} and Ergun, \{R. E.\} and Russell, \{C. T.\} and Lindqvist, \{P. A.\} and \{Le Contel\}, O.",

year = "2018",

month = jan,

day = "28",

doi = "10.1002/2017GL076509",

language = "English",

volume = "45",

pages = "556--564",

journal = "Geophysical Research Letters",

issn = "0094-8276",

number = "2",

}

TY - JOUR

T1 - Electron Jet Detected by MMS at Dipolarization Front

AU - Liu, C. M.

AU - Fu, H. S.

AU - Vaivads, A.

AU - Khotyaintsev, Y. V.

AU - Gershman, D. J.

AU - Hwang, K. J.

AU - Chen, Z. Z.

AU - Cao, D.

AU - Xu, Y.

AU - Yang, J.

AU - Peng, F. Z.

AU - Huang, S. Y.

AU - Burch, J. L.

AU - Giles, B. L.

AU - Ergun, R. E.

AU - Russell, C. T.

AU - Lindqvist, P. A.

AU - Le Contel, O.

PY - 2018/1/28

Y1 - 2018/1/28

N2 - Using MMS high-resolution measurements, we present the first observation of fast electron jet (Ve ~2,000 km/s) at a dipolarization front (DF) in the magnetotail plasma sheet. This jet, with scale comparable to the DF thickness (~ 0.9 di), is primarily in the tangential plane to the DF current sheet and mainly undergoes the E × B drift motion; it contributes significantly to the current system at the DF, including a localized ring-current that can modify the DF topology. Associated with this fast jet, we observed a persistent normal electric field, strong lower hybrid drift waves, and strong energy conversion at the DF. Such strong energy conversion is primarily attributed to the electron-jet-driven current (E ⋅ je ≈ 2 E ⋅ ji), rather than the ion current suggested in previous studies.

AB - Using MMS high-resolution measurements, we present the first observation of fast electron jet (Ve ~2,000 km/s) at a dipolarization front (DF) in the magnetotail plasma sheet. This jet, with scale comparable to the DF thickness (~ 0.9 di), is primarily in the tangential plane to the DF current sheet and mainly undergoes the E × B drift motion; it contributes significantly to the current system at the DF, including a localized ring-current that can modify the DF topology. Associated with this fast jet, we observed a persistent normal electric field, strong lower hybrid drift waves, and strong energy conversion at the DF. Such strong energy conversion is primarily attributed to the electron-jet-driven current (E ⋅ je ≈ 2 E ⋅ ji), rather than the ion current suggested in previous studies.

KW - LHD waves

KW - dipolarization front

KW - electric field

KW - electron current

KW - electron jet

KW - energy conversion

UR - https://www.scopus.com/pages/publications/85041058058

U2 - 10.1002/2017GL076509

DO - 10.1002/2017GL076509

M3 - Article

AN - SCOPUS:85041058058

SN - 0094-8276

VL - 45

SP - 556

EP - 564

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 2

ER -

Electron Jet Detected by MMS at Dipolarization Front

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