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Quasi-radial modes of rotating stars in general relativity

S'i. Yoshida, Y. Eriguchi

astro-pharXiv:astro-ph/9908359

Abstract

By using the Cowling approximation, quasi-radial modes of rotating general relativistic stars are computed along equilibrium sequences from non-rotating to maximally rotating models. The eigenfrequencies of these modes are decreasing functions of the rotational frequency. The eigenfrequency curve of each mode as a function of the rotational frequency has discontinuities, which arise from the avoided crossing with other curves of axisymmetric modes.

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