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Astron. Astrophys. 324, 1190-1196


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The first three-dimensional reconstruction of a celestial object
at radio wavelengths: Jupiter's radiation belts

R.J. Sault1, T. Oosterloo2, and G.A. Dulk3,4, and Y. Leblanc3

1Australia Telescope National Facility, CSIRO, P.O. Box 76, Epping, N.S.W. 2121, Australia
2Istituto di Fisica Cosmica del CNR, Via Bassini 15, I-20133 Milano, Italy
3CNRS-URA 264, DESPA, Observatoire de Paris, F-92195 Meudon, France
4Department of Astrophysical, Planetary and Atmospheric Sciences, University of Colorado, Boulder, CO 80309, USA

Received 5 December 1996 / Accepted 17 February 1997

Abstract

For an object where the emission is optically thin, it is shown that the visibility measured by an interferometer is a sample of the three-dimensional Fourier transform of the object. If the object rotates, then it is possible to sample this three-dimensional Fourier space adequately, and so reconstruct the object in three dimensions. Using this principle, reconstructions of Jupiter's synchrotron radiation belts can be formed. This paper considers the principle and practice of this reconstruction process.

Key words: planets and satellites: individual: Jupiter - techniques: interferometric - methods: data analysis

Send offprint requests to: R.J. Sault


© European Southern Observatory (ESO) 1997

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