Ray tracing of Jovian kilometric radiation

Details Ray tracing of Jovian kilometric radiation Ray tracing of Jovian kilometric radiation

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7...65g&link_type=abstract

Geophysical Research Letters, vol. 7, Jan. 1980, p. 65-68.

Astronomy and Astrophysics

Astronomy

11

Atmospheric Models, Atmospheric Radiation, Jupiter Atmosphere, Planetary Magnetospheres, Planetary Radiation, Plasma Frequencies, Ray Tracing, Computerized Simulation, Electron Plasma, Io, Low Frequencies, Plasma Spectra, Plasma Waves, Toruses, Voyager Project, Jupiter, Radiation, Wavelengths, Kilometer Waves, Ray Tracing, Models, Magnetosphere, Satellites, Io, Plasmas, Torus, Waves, Electrons, Frequency, Data, Analysis, Plasma Wave Instrument, Source Region, Magnetic Fields, Polarization, Computer Techniqu

Scientific paper

Results of computer ray tracing of Jovian kilometric radiation from 56.2 kHz to 1 MHz in a model Jovian magnetosphere with an Io torus are presented. Ray tracing calculations indicate that the Io torus presents a propagation barrier to the radiation and that the Jovian kilometric radiation must be generated in the L-O mode from a source near Jupiter on field lines passing through the Io torus. One effect of the Io torus is to refract the rays away from the magnetic equator forming a shadow zone at radial distances beyond the torus. In general, at radial distances greater than 10 Jovian radii, as the wave frequency increases (greater than 200 kHz) so does the magnetic latitude of the shadow zone. These and other features of the ray tracing calculations are in good qualitative agreement with the observations from the plasma wave receiver and planetary radio astronomy experiment on board both Voyagers 1 and 2.

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