3 papers
astro-ph.HE2026
Iron K signatures from accretion disks around fermionic dark matter cores
V. Crespi, F. L. Vieyro, C. R. Argüelles +2
The fluorescent iron line and its broadening due to relativistic effects are excellent probes to study the inner part of an accretion disk and the space-time geometry near the comp…
astro-ph.GA2025
The dynamics of S-stars and G-sources orbiting a supermassive compact object made of fermionic dark matter
Valentina Crespi, Carlos R. Argüelles, Eduar A. Becerra-Vergara +4
Surrounding Sgr A*, a cluster of young and massive stars coexist with a population of dust-enshrouded objects, whose astrometric data can be used to scrutinize the nature of Sgr A*…
astro-ph.GA2025
Fermionic Dark Matter spikes: origin and growth of Black Hole seeds
Valentina Crespi, Carlos R. Argüelles, Jorge A. Rueda
We characterize the overdensity (spike) of fermionic dark matter (DM) particles around a supermassive black hole (SMBH) within a general relativistic analysis. The initial DM halo…