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1975
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H. Robe et al., « Note sur les oscillations non radiales du modèle standard », Bulletins de l'Académie Royale de Belgique, ID : 10.3406/barb.1975.57908
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Résumé
. — The non radial oscillations of the standard model are studied numerically for values of the degree l, of the spherical harmonics ranging from l = 2 to l = 50 in the case of the g modes and l = 2 to 200 in the case of the ƒ and p modes. It is found that for values l > 50, the eigenvalues σ² of the ƒ and p modes are nearly proportional to l and that the amplitudes are only important in a superficial region, the narrower the higher the value of l. Moreover, for / in the range 400-800, the periods of the first p modes in the case of the sun, supposed built on this model, vary from 3 to 5 minutes. The eigenvalues of the g modes seem to be bounded and while the corresponding amplitude remains important in the whole model, it tends to increase considerably, especially for the g1, g2 and g3 modes, in the central regions as l increases. This behaviour of the eigenfunctions could have interesting consequences for vibrational instability.