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Comparative observations of plasma waves at the outer planetsObservations of the plasma-wave spectra from the four major outer planets are examined with particular attention given to the instabilities related to the precipitation of energetic particles. Wave-particle interactions involving hiss, chorus, and electron-cyclotron harmonic emissions are studied. These interactions contribute about 10 exp 13 W into the Jovian atmosphere, and the electron-cyclotron emissions on Saturn are shown to contribute significantly to the precipitation of energetic electrons. Whistler-mode waves are shown to exist at Uranus with intensities that could put 3-40 keV electrons on strong diffusion, but the amplitudes of the emissions are not sufficient to make them a significant part of precipitation. Weak electron-cyclotron harmonic emissions and whistler modes are detected at Neptune, suggesting that the present dataset is based on regions of low wave intensities.
Document ID
19920069336
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kurth, W. S.
(Iowa, University Iowa City, United States)
Date Acquired
August 15, 2013
Publication Date
August 1, 1992
Publication Information
Publication: Advances in Space Research
Volume: 12
Issue: 8 Au
ISSN: 0273-1177
Subject Category
Lunar And Planetary Exploration
Accession Number
92A51960
Funding Number(s)
CONTRACT_GRANT: JPL-957723
Distribution Limits
Public
Copyright
Other

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