Oblique whistler-mode waves in the presence of electron beams

Details Oblique whistler-mode waves in the presence of electron beams Oblique whistler-mode waves in the presence of electron beams

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38..791s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 38, June 1990, p. 791-805. Research supported by SERC, NERC, and UGCI.

Physics

4

Electron Beams, Magnetospheric Electron Density, Plasma Waves, Whistlers, Ampte (Satellites), Gyrofrequency, Magnetopause, Wave Propagation

Scientific paper

Consideration is given to the problems of oblique whistler-mode propagation, instability, and damping for a hot anisotropic plasma in the presence of electron beams using the quasi-longitudinal and quasi-electrostatic approximations. The general expressions for the elements of a plasma dielectric tensor are derived. These expressions are then applied to the analysis of quasi-longitudinal and quasi-electrostatic whistler-mode propagations. The results are applied to whistler-mode propagation in the vicinity of a magnetopause. The problem of whistler-mode instability or damping within the quasi-longitudinal approximation is considered. The same problem is then considered using the quasi-electrostatic approximation. The relevance of these results to actual observations in the vicinity of the magnetopause is then discussed.

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