A computer simulation study of hook-induced electrostatic bursts observed in the magnetosphere by the ISEE satellite

Details A computer simulation study of hook-induced electrostatic bursts observed in the magnetosphere by the ISEE satellite A computer simulation study of hook-induced electrostatic bursts observed in the magnetosphere by the ISEE satellite

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.3873m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, June 1, 1984, p. 3873-3881.

Physics

5

Bursts, Computerized Simulation, Electrostatics, Magnetospheric Instability, Codes, Electron Beams, International Sun Earth Explorers, Monochromatic Radiation, Whistlers

Scientific paper

Observations from the ISEE satellite have recently revealed interesting electrostatic bursts that are apparently hook-induced emissions stimulated by the combined action of a coherent whistler-mode wave and a simultaneously observed electron beam with an energy range of the order of 1 keV. In order to seek a plausible generation mechanism and interpret this nonlinear phenomenon, a computer simulation study was carried out. The code used is a 2 1/2-D electromagnetic particle code following nonlinear motions of more than a half million particles in the 128 x 128 grid space under the self-consistent fields. The results show an interesting two-beam jetting as a result of a trapping and subsequent detrapping process, yielding a strong electrostatic emission with k vector parallel to the external magnetic field. The nonlinear evolutions of the wave spectra and of particle distribution functions and their phase-space behavior are discussed in connection with the observed ES bursts.

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