31st Annual Meeting of the DPS, October 1999
Session 54. Outer Planet Physics II Posters
Poster Group II, Thursday-Friday, October 14, 1999, Kursaal Center

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[54.07] Jupiter's magnetic field as revealed by the synchrotron radiation belts

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.

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