Constraining primordial black hole fraction at the galactic centre using radio observational data
Man Ho Chan, Chak Man Lee
Abstract
ABSTRACT Recent gamma-ray and cosmic-ray observations have put strong constraints on the amount of primordial black holes (PBHs) in our universe. In this paper, we use the archival radio data of the inner Galactic Centre to constrain the PBH to dark matter ratio for three different PBH mass distributions including monochromatic, lognormal, and power law. We show that the amount of PBHs only constitutes a very minor component of dark matter at the Galactic Centre for a large parameter space.
Topics & Concepts
PhysicsPrimordial black holeAstrophysicsDark matterAstronomyIntermediate-mass black holeSkyBlack hole (networking)Baryonic dark matterStellar black holeCosmologyBinary black holeHot dark matterGalaxyGravitational waveDark energyLink-state routing protocolRouting protocolComputer scienceRouting (electronic design automation)Computer networkGalaxies: Formation, Evolution, PhenomenaCosmology and Gravitation TheoriesRadio Astronomy Observations and Technology