Quasi-Radial Modes of Pulsating Neutron Stars: Numerical Results for General-Relativistic Rigidly Rotating Polytropic Models

Vassilis Geroyannis, Eleftheria Tzelati
2014 International Journal of Astronomy and Astrophysics International Journal of Astronomy and Astrophysics  
In this paper we compute general-relativistic polytropic models simulating rigidly rotating, pulsating neutron stars. These relativistic compact objects, with a radius of ~10 km and mass between ~1.4 and 3.2 solar masses, are closely related to pulsars. We emphasize on computing the change in the pulsation eigenfrequencies owing to a rigid rotation, which, in turn, is a decisive issue for studying stability of such objects. In our computations, we keep rotational perturbation terms of up to second order in the angular velocity.
doi:10.4236/ijaa.2014.43041 fatcat:gcnqokz7uvbirerd66tmpetgbq