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

Man Ho CHAN, Chak Man LEE

Research output: Contribution to journalArticlespeer-review

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. Copyright © 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.
Original languageEnglish
Pages (from-to)1212-1216
JournalMonthly Notices of the Royal Astronomical Society
Volume497
Issue number1
Early online date08 Jul 2020
DOIs
Publication statusPublished - Sep 2020

Citation

Chan, M. H., & Lee, C. M. (2020). Constraining primordial black hole fraction at the galactic centre using radio observational data. Monthly Notices of the Royal Astronomical Society, 497(1), 1212-1216. doi: 10.1093/mnras/staa1966

Keywords

  • Dark matter
  • Black hole physics

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