51 citations · 170 across the 11 of their papers we have counts for
11 papers
On regular rotating black holes
Ramon Torres, Francesc Fayos
Different proposals for regular rotating black hole spacetimes have appeared recently in the literature. However, a rigorous analysis and proof of the regularity of this kind of sp…
On the quantum corrected gravitational collapse
Ramon Torres, Francesc Fayos
Based on a previously found general class of quantum improved exact solutions composed of non-interacting (dust) particles, we model the gravitational collapse of stars. As the mod…
Singularity free gravitational collapse in an effective dynamical quantum spacetime
R. Torres, F. Fayos
We model the gravitational collapse of heavy massive shells including its main quantum corrections. Among these corrections, quantum improvements coming from Quantum Einstein Gravi…
On the invariant causal characterization of singularities in spherically symmetric spacetimes
Francesc Fayos, Ramon Torres
The causal character of singularities is often studied in relation to the existence of naked singularities and the subsequent possible violation of the cosmic censorship conjecture…
Geometrical locus of massive test particle orbits in the space of physical parameters in Kerr space-time
F. Fayos, Ch. Teijon-Lumbreras
Gravitational radiation of binary systems can be studied by using the adiabatic approximation in General Relativity. In this approach a small astrophysical object follows a traject…
Spherically symmetric models for charged radiating stars and voids: Theoretical approach
Francesc Fayos, Jose M. M. Senovilla, Ramon Torres
We study the matching of a general spherically symmetric spacetime with a Vaidya-Reissner-Nordstrom solution. To that end, we study the properties of spherically symmetric electrom…
Consequences of a Killing symmetry in spacetime's local structure
Francesc Fayos, Carlos F. Sopuerta
In this paper we discuss the consequences of a Killing symmetry on the local geometrical structure of four-dimensional spacetimes. We have adopted the point of view introduced in r…
General approach to the study of vacuum space-times with an isometry
Francesc Fayos, Carlos F. Sopuerta
In vacuum space-times the exterior derivative of a Killing vector field is a 2-form (named here as the Papapetrou field) that satisfies Maxwell's equations without electromagnetic…
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…
Vacuum spacetimes with an isometry
Francesc Fayos, Carlos F. Sopuerta
In vacuum space-times the exterior derivative of a Killing vector field is a two-form that satisfies Maxwell equations without electromagnetic sources. Using the algebraic structur…
On the Papapetrou field in vacuum
Francesc Fayos, Carlos F Sopuerta
In this paper we study the electromagnetic fields generated by a Killing vector field in vacuum space-times (Papapetrou fields). The motivation of this work is to provide new tools…