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On the Equation of State in Jovian Seismology

Published online by Cambridge University Press:  12 April 2016

J. Provost ,
B. Mosser  and
G. Chabrier
J. Provost
Affiliation:
Département Cassini, OCA, BP 229, 06304 NICE Cédex 4
B. Mosser
Affiliation:
DESPA, Observatoire de Paris-Meudon, 5, place Jules Janssen, 92195 MEUDON Principal Cédex
G. Chabrier
Affiliation:
Ecole Normale Supériture de Lyon, 46 Allée d’ltalie, 69364 LYON Cédex 07

Abstract

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We have investigated the effect on the seismological properties of the giant planet Jupiter of different descriptions of the equation of state (EOS) of the fluid hydrogen helium envelop. Recent Jovian models by Chabrier et al. 1992 use the equation of state of Saumon et al. (1992) which predicts the PPT (plasma phase transition). We show that different hypothesis at the level of the PPT induce large differences in the internal structure of the corresponding models, specially the sound speed. This gives rise to substantial differences of the oscillation frequencies up to 100 μHz, for modes of degrees l up to 20. These results show the great capability of Jovian seismology to test the physics involved in the interior of the giant planets.

Type
Posters
Information
International Astronomical Union Colloquium , Volume 147: The Equation of State in Astrophysics , 1994 , pp. 596 - 600
Copyright
Copyright © Cambridge University Press 1994

References

Chabrier, G., Saumon, D., Hubbard, W.B., Lunine, J.I., 1992, AP J 391, 817 CrossRefGoogle Scholar
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Provost, J., Mosser, B., Berthomieu, G., 1993, A&A, 274, 595–611 Google Scholar
Saumon, D., Hubbard, W.B., Chabrier, G., Van Hom, H.M., 1992, Ap J 391, 827 CrossRefGoogle Scholar