Magnetospheric ray tracing studies

Details Magnetospheric ray tracing studies Magnetospheric ray tracing studies

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982asee.nasas....s&link_type=abstract

In NASA. Marshall Space Flight Center The 1982 NASA/ASEE Summer Fac. Fellowship Program 19 p (SEE N83-17359 07-80)

Physics

Jupiter (Planet), Planetary Magnetic Fields, Planetary Magnetospheres, Planetary Radiation, Ray Tracing, Decametric Waves, Io, Plasmasphere, Position (Location), Radio Emission, Radio Spectra, Voyager Project

Scientific paper

Using a model of Jupiter's magnetized plasma environment, radiation raypaths were calculated with a three-dimension ray tracing program. It is assumed that energetic particles produce the emission in the planet's auroral zone at frequencies just above the electron gyrofrequencies. This radiation is generated in narrow sheets defined by the angle of a ray with respect to the magnetic field line. By specifying the source position: latitude, longitude, and radial distance from the planet, signatures in the spectrum of frequency versus time seen by Voyager 1 and 2 were duplicated. The frequency range and the curvature of the decametric arcs in these dynamic spectra are the result of the geometry of the radiation sheets (imposed by the plasma and by the B-field) and illumination of Voyager 1 and 2 as the rotating magnetosphere mimics a pulsar.

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