Physics
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8131057g&link_type=abstract
Unknown
Physics
Emission Spectra, Extraterrestrial Radio Waves, Planetary Magnetospheres, Saturn Atmosphere, Space Plasmas, Bandwidth, Electrostatic Waves, Gyrofrequency, Very Low Frequencies
Scientific paper
During the Voyager 1 flyby of Saturn a series of narrowband electromagnetic emissions were detected by the plasma wave instrument coming from the inner region of the magnetosphere in the frequency range from 3 to 30 kHz. These emissions have many close similarities to continuum radiation detected in the Earth's magnetosphere and narrowband kilometric radiation (nKOM) detected in the Jovian magnetosphere. Based on the close similarity to the terrestrial continuum radiation the Saturn narrowband emissions are interpreted as being generated by mode conversion from intense electrostatic waves at half-integral harmonics of the electron gyrofrequency. The observed frequency spacing suggests that the emissions are being generated near the moons Tethys, Dione and Rhea, probably in regions of large plasma density gradients associated with boundaries of the plasma sheet.
Gurnett Donald A.
Kurth Willaim S.
Scarf Frederick L.
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