Constraining Primordial Black Hole Fraction at the Galactic Centre using radio observational data

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
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• Microlensing and dynamical constraints on primordial black hole dark matter with an extended mass function
• Dark Halos of M31 and the Milky Way
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• Primordial Black Hole Dark Matter in the Context of Extra Dimensions
• Future Constraints on Primordial Black Holes from XGIS-THESEUS
• Constraining primordial black holes as dark matter using AMS-02 data
• Stronger Constraints on Primordial Black Holes as Dark Matter Derived from the Thermal Evolution of the Intergalactic Medium over the Last Twelve Billion Years
• Hunting Primordial Black Hole Dark Matter in Lyman-$\alpha$ Forest
• Constraining PBH mass distributions from 21cm brightness temperature results and an analytical mapping between probability distribution of 21cm signal and PBH masses
• Radio bounds on the mixed dark matter scenarios of primordial black holes and WIMPs
• Constraints on the Number of Primordial Black Holes Due to Interaction with Dust
• Planck isocurvature constraint on primordial black holes lighter than a kiloton
• Physics Beyond the Standard Model with BlackHawk v2.0
• Limits on primordial black holes detectability with Isatis: A BlackHawk tool
• Correlating Gravitational Wave and Gamma-ray Signals from Primordial Black Holes
• Sensitivities on non-spinning and spinning primordial black hole dark matter with global 21 cm troughs