Reionization effect enhancement due to primordial black holes

Abstract

Primordial black holes (PBH) could account for variety of phenomena like dark matter, reionization of the Universe, early quasars, coalescence of black holes registered through gravitational waves recently. Each phenomenon relates to PBH of a specific mass range. PBH mass spectra varies in a wide range depending on specific model. Earlier we have shown that PBH with monochromatic mass distribution around $5\times 10^{16}$ g value allow to re-ionize the Universe moderately. Here we show that reionization effect and contribution to dark matter can be simultaneously enhanced with more natural extended mass distribution in the range around the same mass value.

arXiv comment6 pages, 6 figures. Accepted for publication in International Journal of Modern Physics D

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• Clusters of primordial black holes
• Observational Constraints on the Primordial Curvature Power Spectrum
• Classical transitions with the topological number changing in the early Universe
• Dispu$\tau$able: the high cost of a low optical depth
• Transitions between topologically non-trivial configurations