42 citations · 88 across the 10 of their papers we have counts for
6 papers · 1 filter
Magnetic field geometry in rotating wormhole spacetimes
Milos Ertola Urtubey, Daniela Pérez
If a black hole is immersed in a magnetosphere,its rotational energy can be transferred to the electromagnetic field and escape as a Poynting flux to infinity. This process of extr…
Gravitational entropy in black hole transformations
Alan Alejandro Pánuco Liñán, Daniela Pérez, Carlos Luna +1
There are several reasons to support the idea that entropy might be associated to gravity itself. In the absence of a quantum theory of gravity, classical estimators for the gravit…
Outgoing electromagnetic flux from rotating wormholes
Milos Ertola Urtubey, Daniela Pérez, Gustavo Esteban Romero
We show for the first time that rotating wormholes are capable of emitting a Poynting flux in the process of accreting magnetized matter. To this end, we analyze the Damour-Soloduk…
A note on geodesics in inhomogeneous expanding spacetimes
Daniela Pérez, Gustavo E. Romero, Luciano E. Combi +1
There are several solutions of Einstein field equations that describe an inhomogeneity in an expanding universe. Among these solutions, the McVittie metric and its generalizations…
Cosmological black holes and the direction of time
Gustavo E. Romero, Daniela Pérez, Federico G. Lopez Armengol
Macroscopic irreversible processes emerge from fundamental physical laws of reversible character. The source of the local irreversibility seems to be not in the laws themselves but…
Gravitational entropy of Kerr black holes
Daniela Pérez, Gustavo E. Romero
Classical invariants of General Relativity can be used to approximate the entropy of the gravitational field. In this work, we study two proposed estimators based on scalars constr…