47 citations · 92 across the 12 of their papers we have counts for
13 papers
Study of Null Geodesics and their Stability in Kalb-Ramond Black Holes
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We investigate null geodesics and their stability in four-dimensional charged Kalb-Ramond black holes with a cosmological constant. The non-vanishing vacuum expectation value of th…
Binary Black Hole Coalescence and the Dynamics of Scalar Hair in Einstein-Maxwell-Scalar Theory
Jean Pierre Díaz, P. A. González, Eleftherios Papantonopoulos +1
We investigate the head-on coalescence of charged binary black holes in Einstein-Maxwell-Scalar (EMS) theory using numerical relativity. The binaries are built from charged punctur…
Scattering, Hawking Radiation and Neutrino Energy Deposition in Euler-Heisenberg Black Holes Surrounded by Perfect Fluid Dark Matter
Ramon Becar, P. A. Gonzalez, Ali Ovgun +2
We study the dynamical and scattering properties for the Euler-Heisenberg BH surrounded by perfect fluid dark matter. The geometry contains a compact non-linear electrodynamic corr…
Observational Tests of Regular Black Holes with Scalar Hair and their Stability
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We study the geodesic structure and observable properties of asymptotically flat regular black holes sourced by a phantom scalar field characterized by a scalar charge . This pa…
Near-horizon Geodesic Instabilities and Anomalous Decay of Quasinormal Modes in Weyl Black Holes
Gerasimos Kouniatalis, P. A. González, Eleftherios Papantonopoulos +1
We study the stability of the Weyl geometry considering an exact black hole solution. By calculating the geodesics of massless and massive scalar fields orbiting outside the Weyl b…
Massive scalar field perturbations of 4D de Sitter Einstein-Gauss-Bonnet black holes
Ramón Bécar, P. A. González, Eleftherios Papantonopoulos +1
We investigate the propagation of massive scalar fields in the background of four-dimensional Einstein-Gauss-Bonnet black holes with de Sitter (dS) asymptotics. Our study focuses o…
Study of Null Geodesics and their Stability in Horndeski Black Holes
D. A. Carvajal, P. A. González, Marco Olivares +2
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 the Einstein tensor and we present the n…
Massive Scalar Field Perturbations of Black Holes Immersed in Chaplygin-Like Dark Fluid
Ramón Bécar, P. A. González, Eleftherios Papantonopoulos +1
We consider massive scalar field perturbations in the background of black holes immersed in Chaplygin-like dark fluid (CDF), and we analyze the photon sphere modes, the de Sitter m…
Quasinormal modes and bound states of massive scalar fields in wormhole spacetimes
Sebastián Alfaro, P. A. González, Diego Olmos +2
In this work we explore the propagation of massive scalar fields on some wormhole backgrounds. On one side, we consider the Bronnikov-Ellis wormhole solution and wormhole geometrie…
Massive Scalar Field Perturbations of Black Holes Surrounded by Dark Matter
Ramón Bécar, P. A. González, Eleftherios Papantonopoulos +1
We consider scalar field perturbations in the background of black holes immersed in perfect fluid dark matter (PFDM). We find, by using the sixth order Wentzel-Kramers-Brillouin (W…
Quasinormal modes of massive scalar fields in four-dimensional wormholes: anomalous decay rate
P. A. González, Eleftherios Papantonopoulos, Ángel Rincón +1
In this work we consider a Generalized Bronnikov-Ellis wormhole and the tideless Morris-Thorne wormhole and we study the propagation of massive scalar fields. We calculate the quas…
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…
Time like geodesics in three-dimensional rotating Hořava AdS black hole
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We study the motion of particles 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 w…