Constraining Primordial Black Hole Fraction at the Galactic Centre using radio observational data
arXiv:2007.05677 · doi:10.1093/mnras/staa1966
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 article, 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, log-normal 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.
Accepted for publication in MNRAS
References in corpus (8)
- Primordial Black Holes as Dark Matter
- Gamma-ray and radio tests of the e+e- excess from DM annihilations
- Microlensing and dynamical constraints on primordial black hole dark matter with an extended mass function
- Dark Halos of M31 and the Milky Way
- Galactic Center Gamma-Ray Excess from Dark Matter Annihilation: Is There A Black Hole Spike?
- Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
- Primordial Black Holes as Dark Matter: Converting Constraints from Monochromatic to Extended Mass Distributions
- Primordial Black Holes as Dark Matter: Constraints From Compact Ultra-Faint Dwarfs