4 papers · 1 filter
Perturbations of Schwarzschild Black Holes in Chern-Simons Modified Gravity
Nicolas Yunes, Carlos F. Sopuerta
We study perturbations of a Schwarzschild black hole in Chern-Simons modified gravity. We begin by showing that Birkhoff's theorem holds for a wide family of Chern-Simons coupling…
Coupling of radial and non-radial oscillations of Neutron stars
Andrea Passamonti, Marco Bruni, Leonardo Gualtieri +1
This is a progress report on our study of the coupling of first-order radial and non-radial relativistic perturbations of a static spherical star. Our goal is to investigate the ef…
Non-linear relativistic perturbation theory with two parameters
Carlos F. Sopuerta, Marco Bruni, Leonardo Gualtieri
An underlying fundamental assumption in relativistic perturbation theory is the existence of a parametric family of spacetimes that can be Taylor expanded around a background. Sinc…
Integrability conditions for vacuum spacetimes with a Killing vector field
Francesc Fayos, Carlos F. Sopuerta
We present a new approach to the study of vacuum spacetimes with a Killing symmetry. The central quantity in this approach is the exterior derivative of the Killing vector field, w…