71 citations · 141 across the 5 of their papers we have counts for
6 papers
Constraints on the Magnetic Field Geometry of Magnetars
H. Sotani, A. Colaiuda, K. D. Kokkotas
We study the effect of the magnetic field geometry on the oscillation spectra of strongly magnetized stars. The magnetic field distributions include both toroidal and poloidal cont…
Non-axisymmetric oscillations of differentially rotating relativistic stars
Andrea Passamonti, Adamantios Stavridis, Kostas Kokkotas
Non-axisymmetric oscillations of differentially rotating stars are studied using both slow rotation and Cowling approximation. The equilibrium stellar models are relativistic polyt…
Torsional Oscillations of Slowly Rotating Relativistic Stars
M. Vavoulidis, A. Stavridis, K. D. Kokkotas +1
We study the effects of rotation on the torsional modes of oscillating relativistic stars with a solid crust. Earlier works in Newtonian theory provided estimates of the rotational…
Gravitational radiation from collapsing magnetized dust
Hajime Sotani, Shijun Yoshida, Kostas D. Kokkotas
In this article we study the influence of magnetic fields on the axial gravitational waves emitted during the collapse of a homogeneous dust sphere. We found that while the energy…
Nonradial oscillations of slowly and differentially rotating compact stars
Adamantios Stavridis, Andrea Passamonti, Kostas Kokkotas
The equations describing nonradial adiabatic oscillations of differentially rotating relativistic stars are derived in relativistic slow rotation approximation. The differentially…
Pulsating relativistic stars
Kostas D. Kokkotas
In this paper we review the recent developments in the relativistic theory of stellar pulsations with special emphasis on the spacetime or w-modes. We discuss also the excitation o…