Les oscillations linéaires et adiabatiques de la sphère homogène

In: Bulletin de la Classe des sciences, Band 52, Heft 1, S. 1126-1142

Abstract

Abstract. — The non radial oscillations of the homogeneous sphere, compressible or incompressible, are rediscussed on the basis of the general fourth order problem. This yields at once all the modes including the ƒ modes. It is also shown that the radial modes belong to the family of p modes and that the non solenoidal modes corresponding to the spherical harmonics of the first degree (l = 1) do not imply a displacement of the centre of mass and must then be taken into account as well as modes corresponding to higher harmonics.