Lower Hybrid Drift Waves and Electromagnetic Electron Space-Phase Holes Associated With Dipolarization Fronts and Field-Aligned Currents Observed by the Magnetospheric Multiscale Mission During a Substorm

被引：33

作者：

Le Contel, O. ^{[1
]}

Nakamura, R. ^{[2
]}

Breuillard, H. ^{[1
]}

Argall, M. R. ^{[3
,4
]}

Graham, D. B. ^{[5
]}

Fischer, D. ^{[2
]}

Retino, A. ^{[1
]}

Berthomier, M. ^{[1
]}

Pottelette, R. ^{[1
]}

Mirioni, L. ^{[1
]}

Chust, T. ^{[1
]}

Wilder, F. D. ^{[6
]}

Gershman, D. J. ^{[7
]}

Varsani, A. ^{[2
]}

Lindqvist, P. -A. ^{[8
]}

Khotyaintsev, Yu. V. ^{[5
]}

Norgren, C. ^{[5
]}

Ergun, R. E. ^{[6
]}

Goodrich, K. A. ^{[6
]}

Burch, J. L. ^{[9
]}

Torbert, R. B. ^{[3
,4
]}

Needell, J. ^{[3
,4
]}

Chutter, M. ^{[3
,4
]}

Rau, D. ^{[3
,4
]}

Dors, I. ^{[3
,4
]}

Russell, C. T. ^{[10
]}

Magnes, W. ^{[2
]}

Strangeway, R. J. ^{[10
]}

Bromund, K. R. ^{[7
]}

Wei, H. Y. ^{[10
]}

Plaschke, F. ^{[2
]}

Anderson, B. J. ^{[11
]}

Le, G. ^{[7
]}

Moore, T. E. ^{[7
]}

Giles, B. L. ^{[7
]}

Paterson, W. R. ^{[7
]}

Pollock, C. J. ^{[7
]}

Dorelli, J. C. ^{[7
]}

Avanov, L. A. ^{[7
]}

Saito, Y. ^{[12
]}

Lavraud, B. ^{[13
]}

Fuselier, S. A. ^{[9
]}

Mauk, B. H. ^{[11
]}

Cohen, I. J. ^{[11
]}

Turner, D. L. ^{[14
]}

Fennell, J. F. ^{[14
]}

Leonard, T. ^{[6
]}

Jaynes, A. N. ^{[6
]}

机构：

[1] Univ Paris Sud, Univ Paris 06, UPMC, Lab Phys Plasmas,UMR7648,CNRS,Ecole Polytech, Paris, France

[2] Austrian Acad Sci, Space Res Inst, Graz, Austria

[3] Univ New Hampshire, Phys Dept, Durham, NH 03824 USA

[4] Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA

[5] Swedish Inst Space Phys, Uppsala, Sweden

[6] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA

[7] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

[8] Royal Inst Technol, Stockholm, Sweden

[9] Southwest Res Inst, San Antonio, TX USA

[10] Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA

[11] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA

[12] Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan

[13] Univ Paul Sabatier, CNRS UMR5277, Inst Rech Astrophys & Planetol, Toulouse, France

[14] Aerosp Corp, Space Sci Dept, El Segundo, CA 90245 USA

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 2017年 / 122卷 / 12期

关键词：

PLASMA SHEET; SOLITARY WAVES; MAGNETOTAIL RECONNECTION; MAGNETIC RECONNECTION; PARTICLE SIMULATIONS; MMS MISSION; SEARCH-COIL; INSTABILITY; GENERATION; REGION;

D O I：

10.1002/2017JA024550

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze two ion scale dipolarization fronts associated with field-aligned currents detected by the Magnetospheric Multiscale mission during a large substorm on 10 August 2016. The first event corresponds to a fast dawnward flow with an antiparallel current and could be generated by the wake of a previous fast earthward flow. It is associated with intense lower hybrid drift waves detected at the front and propagating dawnward with a perpendicular phase speed close to the electric drift and the ion thermal velocity. The second event corresponds to a flow reversal: from southwward/dawnward to northward/duskward associated with a parallel current consistent with a brief expansion of the plasma sheet before the front crossing and with a smaller lower hybrid drift wave activity. Electromagnetic electron phase-space holes are detected near these low-frequency drift waves during both events. The drift waves could accelerate electrons parallel to the magnetic field and produce the parallel electron drift needed to generate the electron holes. Yet we cannot rule out the possibility that the drift waves are produced by the antiparallel current associated with the fast flows, leaving the source for the electron holes unexplained.

引用

页码：12236 / 12257

页数：22