Quasielectrostatic and electrostatic approximations for whistler mode waves in the magnetospheric plasma

Details Quasielectrostatic and electrostatic approximations for whistler mode waves in the magnetospheric plasma Quasielectrostatic and electrostatic approximations for whistler mode waves in the magnetospheric plasma

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38..311h&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 38, Feb. 1990, p. 311-318. Research supported by SERC.

Physics

6

Earth Magnetosphere, Electrostatic Waves, Plasmas (Physics), Whistlers, Distribution Functions, Electron Distribution, Propagation Modes, Refractivity, Synchronous Satellites

Scientific paper

Three model electron distribution functions representative of the region between the plasmapause and the geostationary orbit are constructed. These models are used to compare numerical solutions of the hot electromagnetic dispersion equation with analytical solutions of the quasi-electrostatic dispersion equation, and to compare numerical and analytical solutions of the electrostatic dispersion equation, for whistler mode propagation at wave normal angles theta close to the resonance cone angle theta(R). It is shown that the quasi-electrostatic solutions are a reasonable approximation for all three models when theta is less than theta(R), but when theta is greater than theta(R), the approximation only remains good inside the plasmapause for frequencies equal to 0.4 times the electron gyrofrequency.

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