89 citations · 446 across the 16 of their papers we have counts for
16 papers
Quasinormal modes of a quantum inspired black hole in four dimensions with cosmological constant
R. D. B. Fontana, Jeferson de Oliveira, B. Eslam Panah +1
We study the scalar and Dirac perturbations of quantum-corrected black holes with cosmological constant. Using two different methods (WKB and double-null characteristic integration…
Lower dimensional black holes in nonlinear electrodynamics: causal structure and scalar perturbations
Rodrigo Dal Bosco Fontana
We study the charged black hole solutions of a 2+1 nonlinear electrodynamical theory with cosmological constant. Considered as a one-parameter group of theories (the exponent of th…
Aspects of regular and singular electromagnetic-generalized-quasitopological-gravities black holes in (2+1) dimensions
Jeferson de Oliveira, R. D. B. Fontana, A. B. Pavan
We investigate quasitopological black holes in dimensions in the context of electromagnetic-generalized-quasitopological-gravities (EM-GQT). For three different families of…
Scalar field instabilities in charged BTZ black holes
R. D. B Fontana
We investigate the charged scalar field propagating in a (2+1) charged BTZ black hole. The conditions for stability are studied unveiling, for each black hole geometry, the existen…
Gauss-Bonnet black holes in (2+1) dimensions: Perturbative aspects and entropy features
B. Cuadros-Melgar, R. D. B. Fontana, Jeferson de Oliveira
We investigate some aspects of the -dimensional Gauss-Bonnet black hole proposed in [1][2]. The perturbations of scalar and massless spinorial fields are studied suggesting…
Quasinormal modes and stability of boosted Reissner-Nordström AdS black holes
Rodrigo D. B. Fontana, Filipe C. Mena
We investigate the numerical stability of accelerated AdS black holes against linear scalar perturbations. In particular, we study the evolution of a probe non-minimally coupled sc…
Superradiance and instabilities in black holes surrounded by anisotropic fluids
B. Cuadros-Melgar, R. D. B. Fontana, Jeferson de Oliveira
In this paper we analyze the propagation of a charged scalar field in a Reissner-Nordström black hole endowed with one anisotropic fluid that can play the role of a cosmological te…
Anomalous decay rate of quasinormal modes in Reissner-Nordström black holes
R. D. B. Fontana, P. A. González, Eleftherios Papantonopoulos +1
The anomalous decay rate of the quasinormal modes occurs when the longest-lived modes are the ones with higher angular number. Such behaviour has been recently studied in different…
Stability of the Cauchy horizon in accelerating black-hole spacetimes
Kyriakos Destounis, Rodrigo D. B. Fontana, Filipe C. Mena
The extendibility of spacetime and the existence of weak solutions to the Einstein field equations beyond Cauchy horizons, is a crucial ingredient to examine the limits of General…
Analytical correspondence between shadow radius and black hole quasinormal frequencies
B. Cuadros-Melgar, R. D. B. Fontana, Jeferson de Oliveira
We consider the equivalence of quasinormal modes and geodesic quantities recently brought back due to the black hole shadow observation by Event Horizon Telescope. Using WKB method…
Accelerating black holes: quasinormal modes and late-time tails
Kyriakos Destounis, Rodrigo D. B. Fontana, Filipe C. Mena
Black holes found in binaries move at very high velocities relative to our own reference frame and can accelerate due to the emission of gravitational radiation. Here, we investiga…
Late-time tails, entropy aspects, and stability of black holes with anisotropic fluids
B. Cuadros-Melgar, R. D. B. Fontana, Jeferson de Oliveira
In this work we consider black holes surrounded by anisotropic fluids in four dimensions. We first study the causal structure of these solutions showing some similarities and diffe…
Strong Cosmic Censorship in Horndeski Theory
Kyriakos Destounis, Rodrigo D. B. Fontana, Filipe C. Mena +1
The strong cosmic censorship hypothesis has recently regained a lot of attention in charged and rotating black holes immersed in de Sitter space. Although the picture seems to be c…
Instability of Reissner-Nordström-AdS black hole under perturbations of a scalar field coupled to Einstein tensor
E. Abdalla, B. Cuadros-Melgar, R. D. B. Fontana +3
We study the instability of a Reissner-Nordström-AdS (RNAdS) black hole under perturbations of a massive scalar field coupled to Einstein tensor. Calculating the potential of the s…
Dynamical evolution of non-minimally coupled scalar field in spherically symmetric de Sitter spacetimes
R. D. B. Fontana, Jeferson de Oliveira, A. B. Pavan
We investigate the dynamical behavior of a scalar field non-minimally coupled to Einstein's tensor and Ricci scalar in geometries of asymptotically de Sitter spacetimes. We show th…
Three-dimensional black holes with quintessence
Jeferson de Oliveira, R. D. B. Fontana
We study a quintessential black hole solution in three dimensions, with mass and quintessence charge. By exploring the Carter-Penrose diagram, we show the presence of spacelike and…