38 citations · 76 across the 7 of their papers we have counts for
4 papers · 1 filter
The problem of ultracompact rotating gravastars
Mieszko Rutkowski, Andrzej Rostworowski
A number of authors provided arguments that a rotating gravastar is a good candidate for a source of the Kerr metric. These arguments were based on the second order perturbation an…
Nonlinear perturbations of Reissner-Nordström black holes
Mieszko Rutkowski
We develop a nonlinear perturbation theory of Reissner-Nordström black holes. We show that, at each perturbation level, Einstein-Maxwell equations can be reduced to four inhomogene…
Einstein clusters as models of inhomogeneous spacetimes
Sebastian J. Szybka, Mieszko Rutkowski
We study the effect of small-scale inhomogeneities for Einstein clusters. We construct a spherically symmetric stationary spacetime with small-scale radial inhomogeneities and prop…
Collisions near Kerr black holes: lower limit of energy between orbiting and incoming particles
Mieszko Rutkowski
In our paper we investigate the lower limit of collisional energy of test particles near the Kerr black hole. In particular we examine the minimal Lorentz factor between the freely…