Primordial black holes with mass $10^{16}-10^{17}$ g and reionization of the Universe

Abstract

Primordial black holes (PBHs) with mass $10^{16}-10^{17}$ g almost escape constraints from observations so could essentially contribute to dark matter density. Hawking evaporation of such PBHs produces with a steady rate $\gamma$- and $e^{\pm }$-radiations in MeV energy range, which can be absorbed by ordinary matter. Simplified estimates show that a small fraction of evaporated energy had to be absorbed by baryonic matter what can turn out to be enough to heat the matter so it is fully ionized at the redshift $z\sim \mathrm{5...10}$. The result is found to be close to a borderline case where the effect appears, what makes it sensitive to the approximation used. In our approximation, degree of gas ionization reaches 50-100% by $z\sim 5$ for PBH mass $(\mathrm{3...7})\times 10^{16}$ g with their abundance corresponding to the upper limit.

arXiv comment14 pages, 8 figures, v3: a few comments have been added as compared to previous version

References in corpus (29)

• In the Beginning: The First Sources of Light and the Reionization of the Universe
• New cosmological constraints on primordial black holes
• A Survey of z>5.8 Quasars in the Sloan Digital Sky Survey I: Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z~6
• Observational constraints on Cosmic Reionization
• Primordial Black Holes
• Effect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates
• The thermal history of the intergalactic medium
• The observed ionization rate of the intergalactic medium and the ionizing emissivity at z >5: Evidence for a photon starved and extended epoch of reionization
• Early reionization by miniquasars
• Reionization of Hydrogen and Helium by Early Stars and Quasars
• Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey
• The Formation of Primary Galactic Nuclei during Phase Transitions in the Early Universe
• Signatures of primordial black hole dark matter
• Primordial Structure of Massive Black Hole Clusters
• Cosmic Reionisation by Stellar Sources: Population III Stars
• A Keck Survey for Gravitationally-Lensed Lyman-alpha Emitters in the Redshift Range 8.5 < z < 10.4: New Constraints on the Contribution of Low Luminosity Sources to Cosmic Reionization
• A Limit from the X-ray Background on the Contribution of Quasars to Reionization
• Constraints on Dark Matter annihilations from reionization and heating of the intergalactic gas
• The sky distribution of positronium annihilation continuum emission measured with SPI/INTEGRAL
• Reionisation, chemical enrichment and seed black holes from the first stars: is Population III important?
• Evolving Spectra of Pop III Stars: Consequences for Cosmological Reionization
• Tidal capture of a primordial black hole by a neutron star: implications for constraints on dark matter
• Constraints on Primordial Black Holes by Distortions of Cosmic Microwave Background
• Adiabatic contraction revisited: implications for primordial black holes
• On tidal capture of primordial black holes by neutron stars
• Distinguishing standard reionization from dark matter models
• The Observed Galactic Annihilation Line. Possible Signature of the Cluster for Accreting Small Mass Black Holes
• Transition From Population III to Population II Stars
• Clusters of Black Holes as Point-Like Gamma-ray Sources

Cited by in corpus (26)

• Constraints on Primordial Black Holes
• Primordial Black Holes as Dark Matter
• Primordial Black Holes as Dark Matter: Recent Developments
• Cosmological constraints on exotic injection of electromagnetic energy
• Clusters of primordial black holes
• Observational Evidence for Primordial Black Holes: A Positivist Perspective
• Primordial Black Holes as Dark Matter Candidates
• Primordial Black Holes from a tiny bump/dip in the Inflaton potential
• 21cm Limits on Decaying Dark Matter and Primordial Black Holes
• Planck Constraint on Relic Primordial Black Holes
• The Lyman Continuum escape fraction of galaxies at z=3.3 in the VUDS-LBC/COSMOS field
• Primordial Black Holes
• Examining the end of inflation with primordial black holes mass distribution and gravitational waves
• Primordial black hole constraints with Hawking radiation -- a review
• Probing Dark Matter with Future CMB Measurements
• Close encounters of the primordial kind: a new observable for primordial black holes as dark matter
• Classical transitions with the topological number changing in the early Universe
• Constraints on primordial black holes and curvature perturbations from the global 21cm signal
• Constraining spinning primordial black holes with global 21-cm signal
• Primordial black holes as dark matter and generators of cosmic structure
• Constraints on accreting primordial black holes with the global 21-cm signal
• Influences of accreting primordial black holes on the global 21 cm signal in the dark ages
• Reionization effect enhancement due to primordial black holes
• Transitions between topologically non-trivial configurations
• Primordial blackhole formation: Exploring chaotic potential with a sharp step via the GLMS perspective
• Gravitational Waves from Gauge Quanta Produced during Inflation