3 papers
astro-ph.CO2025
Excess of substructure due to primordial black holes
Patricio Colazo, Nelson Padilla, Federico Stasyszyn
This paper explores the impact of primordial black holes (PBHs) on the abundance of low-mass haloes and subhaloes in the dark and low-stellar-mass regime, and examines how these ef…
astro-ph.CO2024
Structure formation with primordial black holes to alleviate early star formation tension revealed by JWST
P. E. Colazo, F. Stasyszyn, N. Padilla
This Letter explores the potential role of primordial black holes (PBHs) to address cosmological tensions as the presence of more massive than expected galaxies at high redshifts,…
astro-ph.GA2023
Active galactic nuclei and gravitational redshifts
N. D. Padilla, S. Carneiro, J. Chaves-Montero +4
Context: Gravitational redshift is a classical effect of Einstein's General Relativity, already measured in stars, quasars and clusters of galaxies. Aims: We here aim to identify t…