2 papers
astro-ph.HE2026
Nonthermal hotspot orbiting the supermassive black hole Sgr A*
Alejandro Cruz-Osorio, David Barrero-González, Juan J. Zaldívar +1
Recent millimeter wavelength observations at 230 GHz by the Event Horizon Telescope have resolved the innermost structure of the Galactic Center, Sgr A*, revealing a ring-like stru…
astro-ph.HE2026
Relativistic Spherical Accretion in Nonrotating Black Hole Spacetimes: Astrophysical Implications
David Barrero-González, Alejandro Cruz-Osorio
We present a systematic analysis of spherically symmetric accretion flows onto thirteen non-rotating black hole spacetimes, including charged and regular black holes, scalar and di…