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Issue A&A
Volume 375, Number 3, September 2001
Page(s) L47 - L50
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20010989



A&A 375, L47-L50 (2001)
DOI: 10.1051/0004-6361:20010989

On Jupiter's inertial mode oscillations

B. Dintrans1, 2 and R. Ouyed1

1  Nordic Institute for Theoretical Physics, Blegdamsvej 17, 2100 Copenhagen, Denmark
2  Laboratoire d'Astrophysique de Toulouse, Observatoire Midi-Pyrénées, 14 avenue É. Belin, 31400 Toulouse, France

(Received 21 June 2001 /Accepted 8 July 2001)

Abstract
Properties of inertial modes of Jupiter are investigated for an n=1 polytropic description of the planet interior. We use the anelastic approximation to overcome the usual handicap of a severe spherical harmonics truncation. A powerful iterative solver then allows us to compute the frequencies of the most promising low-order modes using as many spherical harmonics as necessary. The induced ${\cal O}{1\%}$ errors of our model are now within observational limits. A plausible seismological model of Jupiter might thus be at hand provided the use of a more realistic description of the planet interior.


Key words: planets and satellites: individual: Jupiter

Offprint request: B. Dintrans, dintrans@nordita.dk




© ESO 2001


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