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Y. Leblanc (Observatoire de Paris, Meudon), R.J. Sault (Australia Telescope National Facility), G.A. Dulk (Observatoire de Paris, Meudon)
High resolution observations of Jupiter's synchrotron radiation belts show a well defined maximum of intensity at a radius that ranges from about 1.4 to 1.7 RJ. We compare the observations with calculations of radius, jovicentric latitude and magnetic declination at the magnetic equator on a locus of constant B in three field models. The agreement is generally good, and the discrepancies suggest inadequacies in the field models, particularly at longitudes where the non-dipolar field elements are pronounced.
These observations of the synchrotron radiation pertain to small radii and low latitudes where few or no in-situ data exist. We derive otherwise-unobtainable information on the magnetic field at R less than 2 radii and latitude less than 15o.