Primordial Black Hole: Mass and Angular Momentum Evolution
G.S. Bisnovatyi-Kogan, O.Yu. Tsupko
TL;DR
This paper investigates how primordial black holes evolve in mass and spin within a hot universe, focusing on radiation accretion effects using numerical simulations and approximate models.
Contribution
It provides new estimates of mass increase and spin decrease for primordial black holes due to radiation accretion in the early universe.
Findings
Mass of PBHs increases due to accretion.
Spin of PBHs decreases as they accrete matter.
Results are based on numerical simulations and approximate relations.
Abstract
The evolution of the primordial low mass black hole (PBH) in hot universe is considered. Increase of mass and decrease of PBH spin due to the accretion of radiation dominated matter are estimated with using of results of numerical simulation of PBH formation and approximate relations for accretion to a rotating black hole.
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