8 papers
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 mod…
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 ma…
Shadows from thin accretion disks of parametrized black hole solutions
Gonzalo J. Olmo, João LuÃs 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…
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…
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.…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…