299 citations · 357 across the 9 of their papers we have counts for
8 papers · 1 filter
Shadows and gravitational perturbations of black bounces
Alana C. L. Santos, Leandro A. Lessa, Roberto V. Maluf +1
We investigate axial gravitational perturbations and shadow formation in black-bounce geometries supported by anisotropic fluids within general relativity. Two distinct classes of…
On energy-momentum conservation in non-minimal geometry-matter coupling theories
Gonzalo J. Olmo, Miguel A. S. Pinto
In this work, we discuss the conditions that allow the establishment of an equivalence between gravity models and General Relativity (GR) coupled to a modified mat…
Echoes and quasinormal modes of asymmetric black bounces
Alana C. L. Santos, Leandro A. Lessa, Roberto V. Maluf +1
We study quasinormal modes and echoes of symmetric and asymmetric black bounce solutions generated by anisotropic fluids within the framework of general relativity. We derive the e…
Shadows from thin accretion disks of parametrized black hole solutions
Gonzalo J. Olmo, João Luís Rosa, Diego Rubiera-Garcia +2
We discuss the optical appearance from thin accretion disks in parametrized black holes, namely, solutions characterized by an arbitrarily large number of parameters without any re…
Resolving space-time singularities in spherically symmetric black holes: geodesic completeness, curvature scalars, and tidal forces
Haroldo C. D. Lima Junior, Renan B. Magalhães, Gonzalo J. Olmo +1
The existence of black holes in the Universe is nowadays established on the grounds of a blench of astrophysical observations, most notably those of gravitational waves from binary…
Quasi-normal modes and shadows of scale-dependent regular black holes
Benjamin Koch, Gonzalo J. Olmo, Ali Riahinia +2
In this paper we investigate how a regular scale-dependent black hole, characterized by a single extra parameter , behaves under perturbations by a test field (quasi-normal mode…
Regular black hole solutions in -dimensional gravity coupled to nonlinear electrodynamics
Miguel A. S. Pinto, Roberto V. Maluf, Gonzalo J. Olmo
In this paper, we investigate regular black hole solutions in the (2+1)-dimensional versions of General Relativity and gravity, both coupled to nonlinear electrodynamics.…
White Paper and Roadmap for Quantum Gravity Phenomenology in the Multi-Messenger Era
R. Alves Batista, G. Amelino-Camelia, D. Boncioli +101
The unification of quantum mechanics and general relativity has long been elusive. Only recently have empirical predictions of various possible theories of quantum gravity been put…