139 citations · 611 across the 23 of their papers we have counts for
22 papers · 1 filter
Superradiant instability and charged scalar quasinormal modes for -dimensional Coulomb-like AdS black holes from nonlinear electrodynamics
P. A. González, Ángel Rincón, Joel Saavedra +1
We study the propagation of charged scalar fields in the background of -dimensional Coulomb-like AdS black holes, and we show that such propagation is unstable under Dirichlet…
Scalar quasinormal modes for 2+1-dimensional Coulomb like AdS black holes from non lineal electrodynamics
Almendra Aragón, P. A. González, Joel Saavedra +1
We study the propagation of scalar fields in the background of -dimensional Coulomb like AdS black holes, and we show that such propagation is stable under Dirichlet boundary…
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…
Null geodesics in five-dimensional Reissner-Nordström anti-de Sitter black hole
P. A. González, Marco Olivares, Yerko Vásquez +1
The study of the motion of photons around massive bodies is one of the most useful tools to know the geodesic structure associated with said gravitational source. In the present wo…
Massive Dirac quasinormal modes in Schwarzschild-dS black holes: anomalous decay rate and fine structure
Almendra Aragón, Ramón Bécar, P. A. González +1
Recently, the anomalous decay rate of quasinormal modes has been studied for some geometries under scalar field perturbations, which occurs when the longest-lived modes are the one…
Quasinormal modes and their anomalous behavior for black holes in gravity
Almendra Aragón, P. A. González, Eleftherios Papantonopoulos +1
We study the propagation of scalar fields in the background of an asymptotically de-Sitter black hole solution in gravity. The aim of this work is to analyze in modified the…
Anomalous decay rate of quasinormal modes in Schwarzschild-dS and Schwarzschild-AdS black holes
Almendra Aragón, P. A. González, Eleftherios Papantonopoulos +1
Recently an anomalous decay rate of the quasinormal modes of a massive scalar field in Schwarzschild black holes backgrounds was reported in which the longest-lived modes are the o…
Perturbative and nonperturbative quasinormal modes of 4D Einstein-Gauss-Bonnet black holes
Almendra Aragón, Ramón Bécar, P. A. González +1
We study the propagation of probe scalar fields in the background of 4D Einstein-Gauss-Bonnet black holes with anti-de Sitter (AdS) asymptotics and calculate the quasinormal modes.…
Collision of particles near a three-dimensional rotating Hořava AdS black hole
Ramón Bécar, P. A. González, Yerko Vásquez
We consider a three-dimensional rotating Hořava AdS black hole, that corresponds to a Lorentz-violating version of the BTZ black hole and we analyze the effect of the breaking of L…
Constraints on Scalar-Tensor Theory of Gravity by Solar System Tests
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We study the motion of particles in the background of a scalar-tensor theory of gravity in which the scalar field is kinetically coupled to Einstein tensor. We constrain the value…
Motion and trajectories of photons in a three-dimensional rotating Hořava AdS black hole
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We study the motion of photons in the background of a three-dimensional rotating Hořava AdS black hole that corresponds to a Lorentz-violating version of the BTZ black hole and we…
D=11 cosmologies with teleparallel structure
Christian G. Bohmer, Franco Fiorini, P. A. González +1
The presence of additional compact dimensions in cosmological models is studied in the context of modified teleparallel theories of gravity. We focus the analysis on eleven dimensi…
Quasinormal modes of three-dimensional rotating Hořava AdS black hole and the approach to thermal equilibrium
Ramón Bécar, P. A. González, Eleftherios Papantonopoulos +1
We compute the quasinormal modes (QNMs) of a massive scalar field in the background of a rotating three-dimensional Hořava AdS black hole, and we analyze the effect of the breaking…
Teleparallel Equivalent of Lovelock Gravity, Generalizations and Cosmological Applications
P. A. González, Samuel Reyes, Yerko Vásquez
We consider the teleparallel equivalent of Lovelock gravity and its natural extension, where the action is given by an arbitrary function $f(T_{_{L_1}}, T_{_{L_2}},\cdot \cdot \cdo…
Deflection of light by rotating regular black holes using the Gauss-Bonnet theorem
Kimet Jusufi, Ali Övgün, Joel Saavedra +2
In this paper, we study the weak gravitational lensing in the spacetime of rotating regular black hole geometries such as Ayon-Beato-García (ABG), Bardeen, and Hayward black holes.…
Motion and collision of particles in rotating linear dilaton black hole
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We study the motion of particles in the background of a four-dimensional linear dilaton black hole. We solve analytically the equations of motion of the test particles and we descr…
AdS and Lifshitz black hole solutions in conformal gravity sourced with a scalar field
Felipe Herrera, Yerko Vásquez
In this paper we obtain exact asymptotically anti-de Sitter black hole solutions and asymptotically Lifshitz black hole solutions with dynamical exponents and of four-d…
Superradiant Instability of Near Extremal and Extremal Four-Dimensional Charged Hairy Black Hole in anti-de Sitter Spacetime
P. A. González, Eleftherios Papantonopoulos, Joel Saavedra +1
We study the instability of near extremal and extremal four-dimensional AdS charged hairy black hole to radial neutral massive and charged massless scalar field perturbations. We s…
Quasinormal modes of a scalar field in the Einstein--Gauss--Bonnet-AdS black hole background: Perturbative and non-perturbative branches
P. A. González, R. A. Konoplya, Yerko Vásquez
It has recently been found that quasinormal modes of asymptotically anti-de Sitter (AdS) black holes in theories with higher curvature corrections may help to describe the regime o…
Motion of magnetically charged particles in a magnetically charged stringy black hole spacetime
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +2
We study the motion of massive particles with electric and magnetic charges in the background of a magnetically charged Garfinkle-Horowitz-Strominger stringy black hole. We solve a…
Fermionic and scalar fields as sources of interacting dark matter-dark energy
Samuel Lepe, Javier Lorca, Francisco Peña +1
From a variational action with non-minimal coupling with a scalar field and classical scalar and fermionic interaction, cosmological field equations can be obtained. Imposing a FLR…
Effective gravitational equations on brane world with induced gravity described by term
Joel Saavedra, Yerko Vásquez
In this article we study a generalization of DGP scenarios, where the induced gravity is given by a term. We obtain the effective gravitational equations and the effective F…