Primordial black holes as a dark matter candidate
Anne M Green, Bradley J Kavanagh
Abstract
Abstract The detection of gravitational waves from mergers of tens of Solar mass black hole binaries has led to a surge in interest in primordial black holes (PBHs) as a dark matter candidate. We aim to provide a (relatively) concise overview of the status of PBHs as a dark matter candidate, circa Summer 2020. First we review the formation of PBHs in the early Universe, focussing mainly on PBHs formed via the collapse of large density perturbations generated by inflation. Then we review the various current and future constraints on the present day abundance of PBHs. We conclude with a discussion of the key open questions in this field.
Topics & Concepts
Primordial black holePhysicsDark matterAstrophysicsGravitational waveAstronomyBinary black holeSolar massHot dark matterBlack hole (networking)Gravitational collapseStellar black holeMixed dark matterSolar SystemWarm dark matterDark fluidScalar field dark matterHawking radiationUniverseCurrent (fluid)GravitationLight dark matterCosmology and Gravitation TheoriesPulsars and Gravitational Waves ResearchDark Matter and Cosmic Phenomena