902 citations · 5.7k across the 204 of their papers we have counts for
24 papers · 1 filter
Survival of black holes through a cosmological bounce
Daniela Pérez, Gustavo E. Romero
We analyze whether a black hole can exist and survive in a universe that goes through a cosmological bounce. To this end, we investigate a central inhomogeneity embedded in a bounc…
Black hole in asymmetric cosmological bounce
Daniela Pérez, Santiago E. Perez Bergliaffa, Gustavo E. Romero
We determine the causal structure of the McVittie spacetime for a cosmological model with an asymmetric bounce. The analysis includes the computation of trapping horizons, regular,…
Dynamical black hole in a bouncing universe
Daniela Pérez, Santiago E. Perez Bergliaffa, Gustavo E. Romero
We analyze the causal structure of McVittie spacetime for a classical bouncing cosmological model. In particular, we compute the trapping horizons of the metric and integrate the t…
Relativistic rigid systems and the cosmic expansion
Luciano Combi, Gustavo E. Romero
We analyze the necessary conditions for a body to remain rigid in an expanding cosmological Universe. First, we establish the main theorems and definitions for having a rigid body…
Astrophysical Constraints on Strong Modified Gravity
Daniela Pérez, Gustavo E. Romero
We offer a discussion on the strong field regime predictions of two families of theories that deviate from General Relativity in different aspects: -gravity and Scalar-Tensor…
Exact cosmological black hole solutions in Scalar Tensor Vector Gravity
Daniela Pérez, Gustavo E. Romero
We find an exact solution of Scalar-Tensor-Vector Gravity field equations that represents a black hole embedded in an expanding universe. This is the first solution of the kind fou…