Magnetospheric Multiscale observations of large-amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopause

被引：70

作者：

Ergun, R. E. ^{[1
,2
]}

Holmes, J. C. ^{[1
,2
]}

Goodrich, K. A. ^{[1
,2
]}

Wilder, F. D. ^{[2
]}

Stawarz, J. E. ^{[1
,2
]}

Eriksson, S. ^{[2
]}

Newman, D. L. ^{[3
]}

Schwartz, S. J. ^{[2
,4
]}

Goldman, M. V. ^{[3
]}

Sturner, A. P. ^{[1
,2
]}

Malaspina, D. M. ^{[2
]}

Usanova, M. E. ^{[2
]}

Torbert, R. B. ^{[5
,6
]}

Argall, M. ^{[5
]}

Lindqvist, P-A. ^{[7
]}

Khotyaintsev, Y. ^{[8
]}

Burch, J. L. ^{[6
]}

Strangeway, R. J. ^{[9
]}

Russell, C. T. ^{[9
]}

Pollock, C. J. ^{[10
]}

Giles, B. L. ^{[10
]}

Dorelli, J. J. C. ^{[10
]}

Avanov, L. ^{[10
]}

Hesse, M. ^{[10
]}

Chen, L. J. ^{[11
]}

Lavraud, B. ^{[12
,13
]}

Le Contel, O. ^{[14
]}

Retino, A. ^{[14
]}

Phan, T. D. ^{[15
]}

Eastwood, J. P. ^{[4
]}

Oieroset, M. ^{[15
]}

Drake, J. ^{[11
]}

Shay, M. A. ^{[16
]}

Cassak, P. A. ^{[17
]}

Nakamura, R. ^{[18
]}

Zhou, M. ^{[19
]}

Ashour-Abdalla, M. ^{[19
]}

Andre, M. ^{[8
]}

机构：

[1] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA

[2] Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA

[3] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[4] Imperial Coll London, Blackett Lab, London, England

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

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

[7] Royal Inst Technol, Stockholm, Sweden

[8] Swedish Inst Space Phys, Uppsala, Sweden

[9] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA

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

[11] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[12] Univ Toulouse, Inst Rech Astrophys & Planetol, Toulouse, France

[13] CNRS, Toulouse, France

[14] Lab Phys Plasmas, Palaiseau, France

[15] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[16] Univ Delaware, Dept Phys & Astron, Bartol Res Inst, Newark, DE 19716 USA

[17] West Virginia Univ, Dept Phys & Astron, Morgantown, WV USA

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

[19] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2016年 / 43卷 / 11期

关键词：

magnetic reconnection; large-amplitude waves; electron diffusion region; ion acoustic; electron acoustic; beam mode; DIFFUSION REGION; PLASMA-WAVES; INSTABILITY; SPACECRAFT; MMS;

D O I：

10.1002/2016GL068992

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report observations from the Magnetospheric Multiscale satellites of large-amplitude, parallel, electrostatic waves associated with magnetic reconnection at the Earth's magnetopause. The observed waves have parallel electric fields (E-||) with amplitudes on the order of 100mV/m and display nonlinear characteristics that suggest a possible net E-||. These waves are observed within the ion diffusion region and adjacent to (within several electron skin depths) the electron diffusion region. They are in or near the magnetosphere side current layer. Simulation results support that the strong electrostatic linear and nonlinear wave activities appear to be driven by a two stream instability, which is a consequence of mixing cold (<10eV) plasma in the magnetosphere with warm (similar to 100eV) plasma from the magnetosheath on a freshly reconnected magnetic field line. The frequent observation of these waves suggests that cold plasma is often present near the magnetopause.

引用

页码：5626 / 5634

页数：9

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