Other
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.5769h&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A4, p. 5769-5783.
Other
14
Jupiter (Planet), Magnetic Fields, Planetary Radiation, Radiation Belts, Radio Emission, Synchrotron Radiation, Electron Distribution, Energetic Particles, Flux (Rate), Jupiter, Radiowaves, Emissions, Geometry, Decimeter Waves, Radiation, Magnetic Field, Model, Diffusion, Electrons, Flux, Energy, Amplitude, Simulations, Parameters, Pitch Angle, Calculations, Lifetime, Rings, Satellites, Amalthea, Absorption, Radiation Belt, Experiments, Beaming
Scientific paper
Possible causes of the observed long-term variation of Jovian synchrotron radio emission, including both intrinsic changes in the Jovian radiation belts and apparent changes due to variations in the Jovigraphic declination of the earth, DE, are investigated. An increase in diffusion rate with other parameters held constant results in an inward displacement of the peak emission radial distance that is not observed. Effects of viewing geometry changes are examined. The possible importance of such effects is suggested by a correlation between the total decimetric radio flux and DE, which varies between -3.3 and +3.3 deg during one Jovian orbital period. Because the Jovian central meridian longitudes where the magnetic latitude passes through zero during a given Jovian rotation change substantially with DE and since significant longitudinal asymmetries exist in both the volume emissivity and the latitudinal profile of the beam, the total intensity should be at least a partial function of D sub E.
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