6 papers
Binary Black Hole Coalescence and the Dynamics of Scalar Hair in Einstein-Maxwell-Scalar Theory
Jean Pierre DÃaz, 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…
Dynamical system analysis and observational constraints of cosmological models in mimetic gravity
Alberto Fritis, Daniel Villalobos-Silva, Yerko Vásquez +2
We study the dynamics of homogeneous and isotropic Friedmann-Lemaître-Robertson-Walker cosmological models with positive spatial curvature within the context of mimetic gravity th…
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…