Planetary radio astronomy observations during the Voyager 1 Titan flyby

Details Planetary radio astronomy observations during the Voyager 1 Titan flyby Planetary radio astronomy observations during the Voyager 1 Titan flyby

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.1405d&link_type=abstract

Journal of Geophysical Research, vol. 87, Mar. 1, 1982, p.1405-1409. Research supported by the Centre National d'Etudes Spatial

Physics

Plasma Physics

3

Flyby Missions, Planetary Radiation, Radio Astronomy, Saturn Atmosphere, Titan, Voyager 1 Spacecraft, Atmospheric Density, Earth Magnetosphere, Electron Density (Concentration), Kilometric Waves, Magnetohydrodynamic Stability, Plasma Frequencies, Plasma Physics, Wave Propagation, Saturn, Satellites, Titan, Voyager 1, Radio Observations, Astronomy, Emissions, Pra, Planetary Radio Astronomy Experiment, Kilometer Waves, Wavelengths, Radiation, Structure, Density, Magnetic Fields, Electrons, Electrostatic Prope

Scientific paper

During the Voyager 1 Titan flyby, unusual radio emissions were observed by the planetary radio astronomy experiment in the 20- to 97-kHz frequency range. It is shown that Titan itself is not the source of the observed radio emission. The emission features are attributed to modification of the normal Saturn kilometric radiation by propagation effects in enhanced density structures within the Titan wake. Furthermore, spiky emissions observed in the magnetic wake of Titan are interpreted in terms of local electrostatic instabilities at the electron plasma frequency. From these measurements a range of electron densities in the wake region is derived, and the consistency of the results is discussed.

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