from Reviews
Published online by Cambridge University Press: 07 September 2010
Abstract
This paper reviews a new astrophysical subject: seismology of the giant planets. Seismology is dedicated to the sounding of the interior structure of any object; on the other hand, the interiors of the Jovian planets need to be constrained, in order to improve our knowledge of their structure and of their evolution, as well as the thermodynamical laws involved at high pressures and low temperatures. The relationship between Jovian seismology and, first, Jovian internal structure, and second, high pressure physics, is examined, in order to determine the task of “dioseismology” in the next years. We present then the seismological theoretical approaches developped since the pionnering work of Vorontsov et al. (1976), who calculated the frequencies of the Jovian eigenmodes. We report the first observational attempts for the detection of the oscillations of Jupiter. We discuss the observational results and examine what can be done in the future.
La sismologie des planètes géantes apparaît comme un centre d'intérêt astrophysique d'avenir. Elle doit permettre en effet – et il s'agit en fait du seul outil dont l'on dispose – de sonder les intérieurs de ces planètes, actuellement mal connus, mais dont la détermination représente un intérêt majeur. Cet article récapitule aussi bien les diverses approches théoriques développées depuis l'article précurseur de Vorontsov et al. (1976) que les diverses expériences menées pour détecter les oscillations de la planète Jupiter. L'accent est mis sur les liens reliant l'étude sismologique des planètes géantes avec d'une part leur structure interne, d'autre part la physique hyperbare gérant les équations d'état utilisées pour décrire le comportement de l'enveloppe fluide.
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