HR: 17:45h
AN: SM12C-07    [PDF]
TI: Analysis of variability in the Jovian synchrotron emission
AU: * Santos-Costa, D
AF: Observatoire de Midi-Pyr‚n‚es, Toulouse, Toulouse, F 7 France
AU: Bolton, S J
EM: scott.j.bolton@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Levin, S
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Sault, R
AF: ATNF Paul Wild Observatory, Narrabri, Narrabri, A 7 Australia
AU: Thorne, R
AF: Department of Atmospheric Sciences, UCLA, UCLA, Los Angeles, CA 7 United States
AB: The inner electron radiation belts of Jupiter are well known to induce strong synchrotron radiation characterized by short- and long- term variations: the short-term fluctuations correspond to longitudinal asymmetries arising from asymmetries in Jupiter's magnetic field while the long-term slow intensity fluctuations are probably associated to the solar activity. Studied in-situ by only a few spacecraft, our understanding of the electron radiation belts dynamics is dependent on understanding remote observations of Jovian synchrotron emission. Because the physics of synchrotron radiation is well understood, models can aid in the interpretation of the observations. In this paper, we discuss the source of the reported variations including the roles of dust, satellite interactions and wave interactions in the semi-stable trapped particle distribution functions. We report on results from two physical models of the Jovian electron radiation belts, a trapped particle transport code and a synchrotron simulation code. The present work focuses on the effect of the rings on the electron radiation-belt population using different dust particle and longitudinal distributions.
DE: 5443 Magnetospheres (2756)
DE: 5737 Magnetospheres (2756)
DE: 6030 Magnetic fields and magnetism
DE: 6220 Jupiter
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting