Physics
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11..263t&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 11, March 1984, p. 263-266.
Physics
22
Io, Ion Cyclotron Radiation, Magnetohydrodynamic Stability, Plasma Waves, Space Plasmas, Toroidal Plasmas, Low Frequencies, Power Spectra, Voyager 1 Spacecraft, Jupiter, Satellites, Io, Voyager 1, Plasma Torus, Frequencies, Waves, Intensity, Source, Resonance, Absorption, Electrons, Thermal Effects, Emissions, Latitude, Auroras, Observations, Ions
Scientific paper
The Voyager 1 traversal of the Io plasma torus was marked by pronounced enhancement in low frequency wave activity with especially strong wave intensification below the proton gyrofrequency, suggesting the excitation of ion-cyclotron waves over the same radial range in which the energetic ring current ions exhibit phase space density depletion due to strong pitch angle scattering loss to the atmosphere. If the more intense emissions observed intermittently by Voyager 1 are representative of waves in the high latitude source region, the resulting pitch angle scattering would be sufficiently rapid to explain the observed energetic ion losses and the excitation of intense Jovian auroral emissions of field lines passing through the torus.
Mansergh Thorne Richard
Scarf Frederick L.
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