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Strange stars as persistent sources of gravitational waves
N. Andersson, D. I. Jones, K. D. Kokkotas
We investigate the relevance of the gravitational-wave driven r-mode instability for strange stars. We find that the unstable r-modes affect strange stars in a way that is quite di…
Evolution equations for the perturbations of slowly rotating relativistic stars
Johannes Ruoff, Adamantios Stavridis, Kostas D. Kokkotas
We present a new derivation of the equations governing the oscillations of slowly rotating relativistic stars. Previous investigations have been mostly carried out in the Regge-Whe…
On the r-mode spectrum of relativistic stars: Inclusion of the radiation reaction
Johannes Ruoff, Kostas D. Kokkotas
We consider both mode calculations and time evolutions of axial r-modes for relativistic uniformly rotating non-barotropic neutron stars, using the slow-rotation formalism, in whic…
Torsional Oscillations of Magnetized Relativistic Stars
Neophytos Messios, Demetrios B. Papadopoulos, Nikolaos Stergioulas
Strong magnetic fields in relativistic stars can be a cause of crust fracturing, resulting in the excitation of global torsional oscillations. Such oscillations could become observ…
On the r-mode spectrum of relativistic stars in the low-frequency approximation
Johannes Ruoff, Kostas D. Kokkotas
The axial modes for non-barotropic relativistic rotating neutron stars with uniform angular velocity are studied, using the slow-rotation formalism together with the low-frequency…