Modeling Jupiter's synchrotron radiation

We have constructed a computer model to simulate synchrotron emission from relativistic electrons trapped in Jupiter's magnetic field. The computer pr ogram generates the four Stokes parameters of the synchrotron emission for assumed electron distributions and magnetic field models. The resulting two dimensional Stokes parameter maps can be compared directly with ground bas ed observations. We use magnetic field models derived from spacecraft measu rements, and tailor the electron distributions to fit synchrotron observati ons. The gross features of data from both VLA and single-dish observations are fit by a longitudinally symmetric particle distribution. We suggest tha t higher order terms in the magnetic field, coupled with relativistic beami ng effects of synchrotron radiation, are primarily responsible for the obse rved rotational asymmetry.