3 papers
astro-ph.HE2025
Modeling the shadow of Sgr A* through an eclipsing black hole
Milton Jair Santibañez-Armenta, Gustavo Magallanes-Guijón, Sergio Mendoza +1
The Event Horizon Telescope (EHT) observations of Sgr\,A* resolved the shadow image and emission ring-like structure, which is associated to the photon ring of the supermassive bla…
astro-ph.HE2025
Exploring blazars through sonification. Visual and auditory insights into multifrequency variability
Gustavo Magallanes-Guijón, Sergio Mendoza
Using open astronomical multifrequency databases, we constructed light curves and developed a comprehensive visualisation and sonification analysis for the blazars Mrk~501, Mrk~150…
astro-ph.HE2023
A 78- and 96- minute quasi-periodic gamma-ray oscillations in Sagittarius A*
Gustavo Magallanes-Guijón, Sergio Mendoza
Using publicly available gamma-rays data from the Fermi satellite and the Fermitools package, we constructed 867-day light curves of Sagittarius A* to search for potential periodic…