3 papers
astro-ph.CO2026
Dark-to-black super accretion as a mechanism for early supermassive black hole growth
Nicolas Sanchis-Gual, Juan Barranco, Juan Carlos Degollado +1
The discovery of supermassive black holes with masses at redshifts challenges conventional formation scenarios based on baryonic accretion and…
gr-qc2025
Hayward Boson Stars
Sebastian S. Chicaiza-Medina, Juan Carlos Degollado
We examined the Einstein-Klein-Gordon system coupled to a nonlinear electrodynamics framework that asymptotically supports a Hayward spacetime. We explored the solution space of a…
gr-qc2024
Dynamical transition to spontaneous scalarization in neutron stars: The massive scalar field scenario
Juan Carlos Degollado, Néstor Ortiz, Marcelo Salgado
We analyze numerically the dynamical transition to spontaneous scalarization in neutron stars in the framework of a scalar-tensor theory of gravity where the scalar field is free b…