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

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

Abstract

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.

Original language	English
Pages (from-to)	556-564
Number of pages	9
Journal	Geophysical Research Letters
Volume	45
Issue number	2
DOIs	https://doi.org/10.1002/2017GL076509
Publication status	Published - 28 Jan 2018
Externally published	Yes

Keywords

LHD waves
dipolarization front
electric field
electron current
electron jet
energy conversion

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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",

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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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