info:eu-repo/semantics/article
Primordial black hole evolution in two-fluid cosmology
Fecha
2017-10Registro en:
Gutiérrez, Eduardo Mario; Vieyro, Florencia Laura; Romero, Gustavo Esteban; Primordial black hole evolution in two-fluid cosmology; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 473; 4; 10-2017; 5385-5392
0035-8711
CONICET Digital
CONICET
Autor
Gutiérrez, Eduardo Mario
Vieyro, Florencia Laura
Romero, Gustavo Esteban
Resumen
Several processes in the early Universe might lead to the formation of primordial black holes with different masses. These black holes would interact with the cosmic plasma through accretion and emission processes. Such interactions might have affected the dynamics of the Universe and generated a considerable amount of entropy. In this paper, we investigate the effects of the presence of primordial black holes on the evolution of the early Universe. We adopt a two-fluid cosmological model with radiation and a primordial black hole gas. The latter is modelled with different initial mass functions taking into account the available constraints over the initial primordial black hole abundances.We find that certain populations with narrow initial mass functions are capable to produce significant changes in the scalefactor and the entropy.