Internal structure of Saturn icy satellites inferred from Cassini Radio Science experiments

Details Internal structure of Saturn icy satellites inferred from Cassini Radio Science experiments Internal structure of Saturn icy satellites inferred from Cassini Radio Science experiments

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja....12792c&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #12792

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Scientific paper

We present a comprehensive review of the state of knowledge on the internal structure of Saturn's icy satellites Titan, Enceladus, Hyperion, Dione and Rhea, which are under focus of the RSS gravity science experiments of the Cassini mission. The purpose of this presentation is to describe which improvements on our understanding of these satellites are expected to derive from this mission, as a function of the observation times dedicated so far to the Radio Science observations. Other sources of information by other Cassini instruments are also taken into account in a multidisciplinary approach. For that purpose, we propose detailed modelling of the internal structure of these satellites, and consider the uncertainties expected to interfere with the inversion of the gravity coefficients, from the observational and the modelling points of view. Discussion of the uncertainties on the viscoelastic properties of the materials involved in the internal structure will be especially dealt with. A program of inversion of the degree two gravity coefficients by means of simulated annealing, has been especially designed in view of the fact that the Cassini mission is likely to provide Titan's dynamic Love number k2 with an accuracy within 10^-2.

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