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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2016-06-01
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| 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. |
| format | Article |
| id | doaj-art-3bc3ee46f14e4a0986e995edcedf7553 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| 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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