globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA024890
Scopus ID: 2-s2.0-85041906617
Title:
Negative Potential Solitary Structures in the Magnetosheath With Large Parallel Width
Author: Holmes J.C.; Ergun R.E.; Newman D.L.; Wilder F.D.; Sturner A.P.; Goodrich K.A.; Torbert R.B.; Giles B.L.; Strangeway R.J.; Burch J.L.
Source Publication: Journal of Geophysical Research: Space Physics
ISSN: 21699380
Publishing Year: 2018
Volume: 123, Issue:1
pages begin: 132
pages end: 145
Language: 英语
Keyword: Magnetosheath ; MMS ; Nonlinear Structure ; Solitary Waves ; Solitons
English Abstract: We report multispacecraft observations by the Magnetospheric MultiScale (MMS) mission of large (80–155 λDe parallel to B) electrostatic solitary waves (ESWs). Observations of the same ESWs at different positions and times enable unprecedented accuracy in determining the size, velocity, and evolution of these nonlinear structures. This particular event is a short series of negative potential solitary waves in the magnetosheath. The observed structures differ in amplitude and speed, merging or colliding with one another. A Vlasov simulation supports initial wave growth by a cold feature in the electron distribution function. Such cold electrons are likely the result of mixing between the cold magnetospheric and warm magnetosheath plasma along a reconnection separatrix. ESW speed and perpendicular size are inconsistent with ion phase space holes. Solving Poisson's equation for the measured potential, we find a reduction in electron density rather than an enhancement expected from an electron soliton. These ESWs have an unusual combination of properties on both ion and electron scales, likely supported by a complex electron distribution in the nonlinear state. ©2017. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:6   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/114728
Appears in Collections:气候减缓与适应

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Affiliation: Laboratory for Atmospheric and Space Physics, Boulder, CO, United States; Department of Astrophysical and Planetary Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Physics, University of Colorado Boulder, Boulder, CO, United States; Department of Physics, University of New Hampshire, Durham, NH, United States; Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA, United States; Southwest Research Institute, San Antonio, TX, United States

Recommended Citation:
Holmes J.C.,Ergun R.E.,Newman D.L.,et al. Negative Potential Solitary Structures in the Magnetosheath With Large Parallel Width[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(1)
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