2 papers
astro-ph.HE2025
Rotating neutron stars: anisotropy model comparison
L. M. Becerra, E. A. Becerra-Vergara, F. D. Lora-Clavijo
We build slowly rotating anisotropic neutron stars using the Hartle-Thorne formalism, employing three distinct anisotropy models--Horvat, Bowers-Liang, and a covariant model--to ch…
gr-qc2025
Shadow and gravitational lensing produced by the nonlinear accretion of a scalar field onto a black hole
J. C. Acevedo-Muñoz, F. D. Lora-Clavijo, A. Cruz-Osorio
The hypothesis that classical scalar fields could constitute dark matter on galactic and cosmic scales has garnered significant interest. In scenarios where supermassive black hole…