Plasma wave observations at Neptune

Details Plasma wave observations at Neptune Plasma wave observations at Neptune

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992adspr..12...47g&link_type=abstract

(Planetary studies; Proceedings of Symposium 4 and the Topical Meeting of the Interdisciplinary Scientific Commission B /Meeting

Physics

2

Interplanetary Dust, Neptune (Planet), Planetary Magnetospheres, Plasma Waves, Radio Emission, Solar Planetary Interactions, Bow Waves, Shock Waves, Whistlers

Scientific paper

Phenomena detected by the plasma wave instrument during the Voyager 2 flyby of Neptune are reviewed. Particular attention given to radio emissions, electron plasma oscillations in the solar wind upstream of the bow shock, electrostatic electron cyclotron waves and upper hybrid resonance (UHR) waves, whistler mode noise, and dust impacts. The radio emissions which occur in a broad range of about 5 to 50 kHz are considered to be generated by mode conversion from UHR waves at the magnetic equator. The inner magnetosphere has relatively low plasma wave intensities (less than 100 microV/m). Many small micron-sized dust particles which were detected striking the spacecraft had the maximum impact rate of about 280 impacts per sec at the bound ring plane crossing, and about 110 impacts per sec at the outbound ring plane crossing. Most of the particles were concentrated in a dense disk, about one thousand km thick, near the equatorial plane.

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