Non-equidistant spectrum of gravity modes of a solar model with a mixed core |
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| Authors: | J Provost G Berthomieu E Gavryuseva V Gavryusev |
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| Institution: | (1) Departement Cassini, CNRS and Observatoire de la Cote d'Azur, Nice, France;(2) Institute for Nuclear Research, Academy of Science USSR, Moscow, U.S.S.R.;(3) Nuclear Physics Institute of Moscow State University, Moscow, U.S.S.R. |
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| Abstract: | The asymptotic properties of the gravity modes of solar models with a mixed core have been investigated. In this model, the Brunt-Väissälä frequency has a strong enhancement in the region of variable chemical composition at the boundary of the mixed core, giving rise to a non-equidistant spectrum of gravity modes periods. An asymptotic expression for the periods is derived, which relates the main feature of the departure from period equidistance to the stratification of the model. Qualitative agreement with the numerical periods of the model is obtained. |
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