Physics – Plasma Physics
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jgr...10222131k&link_type=abstract
Journal of Geophysical Research, Volume 102, Issue A10, p. 22131-22140
Physics
Plasma Physics
40
Space Plasma Physics: Wave/Particle Interactions, Space Plasma Physics: Electrostatic Structures, Magnetospheric Physics: Magnetotail Boundary Layers, Magnetospheric Physics: Plasma Waves And Instabilities
Scientific paper
Electrostatic solitary waves (ESW) relevant to the high-frequency component of broadband electrostatic noise spectra observed by Geotail spacecraft in the magnetotail are analyzed. A general description of the ESW, as stationary solutions of Vlasov-Poisson equations, is developed on the basis of the Bernstein-Greene-Kruskal (BGK) technique. It is shown that the structure and relationships among basic parameters of a localized perturbation are primarily determined by resonant and nonresonant plasma screenings of bunched electrons trapped by a potential pulse moving in a plasma. The dependence of the typical width of the pulse on its drift velocity and pulse amplitude is found, which can be treated as a nonlinear dispersion relation for the localized perturbation. The theoretical results are compared with the Geotail data and a particle simulation.
Krasovsky V. L.
Matsumoto Haru
Omura Yuji
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