Computer Science
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979p%26ss...27..963o&link_type=abstract
Planetary and Space Science, vol. 27, July 1979, p. 963-972.
Computer Science
Atmospheric Radiation, Decametric Waves, Jupiter Atmosphere, Planetary Magnetic Fields, Planetary Radiation, Circular Polarization, Frequency Distribution, Magnetic Poles, Northern Hemisphere, Polar Regions, Radiation Sources, Southern Hemisphere, Jupiter, Magnetic Fields, Pioneer 11, Ionosphere, Wavelengths, Io, Decameter Waves, Centimeter Waves, Earth-Based Observations, Plasmas, Electromagnetic Wave Transmission, Polarization, Rotation, Pioneer 10, Harmonics, Atmosphere, Models, Radioemissions, Magnetosp
Scientific paper
The location of the Jovian decametric radiation main source is determined to be the south magnetic pole while the location of the early source is found to be near the north magnetic pole, with an equal contribution from a region near the south magnetic pole. The results are based on calculations of the region observable from the earth (ROE) for Jovian decametric radio waves that are emitted in the direction plus or minus 10 deg centered on the direction perpendicular to the Jovian magnetic field and based on a Pioneer 11 model of the field at the level of the topside region of the Jovian ionosphere. Ground-based observations of the occurrence frequency of the decametric radiation as a function of Jovian longitude, which indicate a remarkable asymmetry between the early and main sources, agree with the calculated ROE area that varies as a function of CML observed from the earth. The observations support a recent theory for the origin of the decametric radiation which is based on a wave-mode conversion from plasma waves into electromagnetic waves.
Kondo Toshiaki
Morioka Akira
Oya Hiroshi
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