Constraining primordial black hole fraction at the galactic centre using radio observational data

2020/07/06 by Man Ho Chan, Chak Man Lee
Physics and Astronomy · #Astronomy #Astrophysics #Baryonic dark matter #Binary black hole #Black hole (networking) #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gravitational wave #Hot dark matter #Intermediate-mass black hole #Physics #Primordial black hole #Radio Astronomy Observations and Technology #Sky #Stellar black hole #astro-ph.GA #astro-ph.HE

paper · pdf · doi:10.1093/mnras/staa1966

published as MNRAS 497, 1212 (2020) · Accepted for publication in MNRAS

openalex publication_date 2020/07/06 · arxiv created 2020/07/11 · arxiv updated 2020/08/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

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.

Citations

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