Quasiextremal primordial black holes are a viable dark matter candidate
J. A. de Freitas Pacheco, Elias Kiritsis, Matteo Lucca, Joseph Silk
Abstract
Black hole evaporation is generally considered inevitable for low-mass black holes, yet there is no confirmation of this remarkable hypothesis. Here, we propose a phenomenological model that appeals to the possible survival of light quasiextremal primordial black holes as a significant dark matter component and show that the related cosmological and astrophysical constraints disappear for reasonable degrees of quasiextremality. The results obtained are general, conservative, and should be taken as a proof of principle for future, model-specific analyses.
Topics & Concepts
PhysicsPrimordial black holeDark matterBlack hole (networking)CosmologyTheoretical physicsAstrophysicsMicro black holeHawking radiationParticle physicsBinary black holeGravitational waveComputer networkComputer scienceRouting protocolRouting (electronic design automation)Link-state routing protocolCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsGalaxies: Formation, Evolution, Phenomena