5 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…
Timelike Geodesics of Regular Black Holes with Scalar Hair
P. A. González, Marco Olivares, Eleftherios Papantonopoulos +1
We investigate timelike geodesics in asymptotically flat regular black holes supported by a phantom scalar field characterized by a scalar charge . This parameter removes the ce…
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…
Massive Particle Motion Around Horndeski Black Holes
D. A. Carvajal, P. A. González, Marco Olivares +2
The time-like structure of the four-dimensional asymptotically flat Horndeski black holes is studied in detail. Focusing on the motion of massive neutral test particles, we constru…
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…