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

Abstract 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 100 mV/m and...

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Main Authors: R. E. Ergun, J. C. Holmes, K. A. Goodrich, Victoria Wilder, J. E Stawarz, S. Eriksson, D. L. Newman, S. J. Schwartz, M. V. Goldman, A. P. Sturner, D. M. Malaspina, M. E. Usanova, R. B. Torbert, M. Argall, P.‐A. Lindqvist, Y. Khotyaintsev, J. L. Burch, R. J. Strangeway, C. T. Russell, C. J. Pollock, B. L. Giles, J. J. C. Dorelli, L. Avanov, M. Hesse, L. J. Chen, B. Lavraud, O. Le Contel, A. Retino, T. D. Phan, J. P. Eastwood, M. Oieroset, J. Drake, M. A. Shay, P. A. Cassak, R. Nakamura, M. Zhou, M. Ashour‐Abdalla, M. André
Format: Article
Language:English
Published: Wiley 2016-06-01
Series:Geophysical Research Letters
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Online Access:https://doi.org/10.1002/2016GL068992
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author R. E. Ergun
J. C. Holmes
K. A. Goodrich
Victoria Wilder
J. E Stawarz
S. Eriksson
D. L. Newman
S. J. Schwartz
M. V. Goldman
A. P. Sturner
D. M. Malaspina
M. E. Usanova
R. B. Torbert
M. Argall
P.‐A. Lindqvist
Y. Khotyaintsev
J. L. Burch
R. J. Strangeway
C. T. Russell
C. J. Pollock
B. L. Giles
J. J. C. Dorelli
L. Avanov
M. Hesse
L. J. Chen
B. Lavraud
O. Le Contel
A. Retino
T. D. Phan
J. P. Eastwood
M. Oieroset
J. Drake
M. A. Shay
P. A. Cassak
R. Nakamura
M. Zhou
M. Ashour‐Abdalla
M. André
author_facet R. E. Ergun
J. C. Holmes
K. A. Goodrich
Victoria Wilder
J. E Stawarz
S. Eriksson
D. L. Newman
S. J. Schwartz
M. V. Goldman
A. P. Sturner
D. M. Malaspina
M. E. Usanova
R. B. Torbert
M. Argall
P.‐A. Lindqvist
Y. Khotyaintsev
J. L. Burch
R. J. Strangeway
C. T. Russell
C. J. Pollock
B. L. Giles
J. J. C. Dorelli
L. Avanov
M. Hesse
L. J. Chen
B. Lavraud
O. Le Contel
A. Retino
T. D. Phan
J. P. Eastwood
M. Oieroset
J. Drake
M. A. Shay
P. A. Cassak
R. Nakamura
M. Zhou
M. Ashour‐Abdalla
M. André
author_sort R. E. Ergun
collection DOAJ
description Abstract 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 100 mV/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 (<10 eV) plasma in the magnetosphere with warm (~100 eV) 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.
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spelling doaj-art-3bc3ee46f14e4a0986e995edcedf75532025-08-20T02:31:41ZengWileyGeophysical Research Letters0094-82761944-80072016-06-0143115626563410.1002/2016GL068992Magnetospheric Multiscale observations of large‐amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopauseR. E. Ergun0J. C. Holmes1K. A. Goodrich2Victoria Wilder3J. E Stawarz4S. Eriksson5D. L. Newman6S. J. Schwartz7M. V. Goldman8A. P. Sturner9D. M. Malaspina10M. E. Usanova11R. B. Torbert12M. Argall13P.‐A. Lindqvist14Y. Khotyaintsev15J. L. Burch16R. J. Strangeway17C. T. Russell18C. J. Pollock19B. L. Giles20J. J. C. Dorelli21L. Avanov22M. Hesse23L. J. Chen24B. Lavraud25O. Le Contel26A. Retino27T. D. Phan28J. P. Eastwood29M. Oieroset30J. Drake31M. A. Shay32P. A. Cassak33R. Nakamura34M. Zhou35M. Ashour‐Abdalla36M. André37Department of Astrophysical and Planetary Sciences University of Colorado Boulder Boulder Colorado USADepartment of Astrophysical and Planetary Sciences University of Colorado Boulder Boulder Colorado USADepartment of Astrophysical and Planetary Sciences University of Colorado Boulder Boulder Colorado USALaboratory of Atmospheric and Space Sciences University of Colorado Boulder Boulder Colorado USADepartment of Astrophysical and Planetary Sciences University of Colorado Boulder Boulder Colorado USALaboratory of Atmospheric and Space Sciences University of Colorado Boulder Boulder Colorado USADepartment of Physics University of Colorado Boulder Boulder Colorado USALaboratory of Atmospheric and Space Sciences University of Colorado Boulder Boulder Colorado USADepartment of Physics University of Colorado Boulder Boulder Colorado USADepartment of Astrophysical and Planetary Sciences University of Colorado Boulder Boulder Colorado USALaboratory of Atmospheric and Space Sciences University of Colorado Boulder Boulder Colorado USALaboratory of Atmospheric and Space Sciences University of Colorado Boulder Boulder Colorado USAPhysics Department University of New Hampshire Durham New Hampshire USAPhysics Department University of New Hampshire Durham New Hampshire USARoyal Institute of Technology Stockholm SwedenSwedish Institute of Space Physics Uppsala SwedenSouthwest Research Institute San Antonio Texas USADepartment of Earth and Space Sciences University of California Los Angeles California USADepartment of Earth and Space Sciences University of California Los Angeles California USANASA Goddard Space Flight Center Greenbelt Maryland USANASA Goddard Space Flight Center Greenbelt Maryland USANASA Goddard Space Flight Center Greenbelt Maryland USANASA Goddard Space Flight Center Greenbelt Maryland USANASA Goddard Space Flight Center Greenbelt Maryland USADepartment of Physics University of Maryland College Park Maryland USAInstitut de Recherche en Astrophysique et Planétologie Université de Toulouse Toulouse FranceLaboratoire de Physique des Plasmas Palaiseau FranceLaboratoire de Physique des Plasmas Palaiseau FranceSpace Sciences Laboratory University of California Berkeley California USAThe Blackett Laboratory Imperial College London London UKSpace Sciences Laboratory University of California Berkeley California USADepartment of Physics University of Maryland College Park Maryland USABartol Research Institute, Department of Physics and Astronomy University of Delaware Newark Delaware USADepartment of Physics and Astronomy West Virginia University Morgantown West Virginia USASpace Research Institute Austrian Academy of Sciences Graz AustriaDepartment of Physics and Astronomy University of California Los Angeles California USADepartment of Physics and Astronomy University of California Los Angeles California USASwedish Institute of Space Physics Uppsala SwedenAbstract 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 100 mV/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 (<10 eV) plasma in the magnetosphere with warm (~100 eV) 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.https://doi.org/10.1002/2016GL068992magnetic reconnectionlarge‐amplitude waveselectron diffusion regionion acousticelectron acousticbeam mode
spellingShingle R. E. Ergun
J. C. Holmes
K. A. Goodrich
Victoria Wilder
J. E Stawarz
S. Eriksson
D. L. Newman
S. J. Schwartz
M. V. Goldman
A. P. Sturner
D. M. Malaspina
M. E. Usanova
R. B. Torbert
M. Argall
P.‐A. Lindqvist
Y. Khotyaintsev
J. L. Burch
R. J. Strangeway
C. T. Russell
C. J. Pollock
B. L. Giles
J. J. C. Dorelli
L. Avanov
M. Hesse
L. J. Chen
B. Lavraud
O. Le Contel
A. Retino
T. D. Phan
J. P. Eastwood
M. Oieroset
J. Drake
M. A. Shay
P. A. Cassak
R. Nakamura
M. Zhou
M. Ashour‐Abdalla
M. André
Magnetospheric Multiscale observations of large‐amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopause
Geophysical Research Letters
magnetic reconnection
large‐amplitude waves
electron diffusion region
ion acoustic
electron acoustic
beam mode
title Magnetospheric Multiscale observations of large‐amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopause
title_full Magnetospheric Multiscale observations of large‐amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopause
title_fullStr Magnetospheric Multiscale observations of large‐amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopause
title_full_unstemmed Magnetospheric Multiscale observations of large‐amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopause
title_short Magnetospheric Multiscale observations of large‐amplitude, parallel, electrostatic waves associated with magnetic reconnection at the magnetopause
title_sort magnetospheric multiscale observations of large amplitude parallel electrostatic waves associated with magnetic reconnection at the magnetopause
topic magnetic reconnection
large‐amplitude waves
electron diffusion region
ion acoustic
electron acoustic
beam mode
url https://doi.org/10.1002/2016GL068992
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