# Reionization effect enhancement due to primordial black holes

## TL;DR

This paper demonstrates that primordial black holes with an extended mass distribution can significantly enhance the reionization of the Universe and contribute to dark matter simultaneously, improving upon previous monochromatic models.

## Contribution

It introduces a more natural extended mass distribution for primordial black holes that amplifies reionization effects and dark matter contribution beyond earlier monochromatic models.

## Key findings

- Extended PBH mass distribution enhances reionization.
- PBHs can simultaneously explain dark matter and reionization.
- Results support broader PBH mass spectra as viable cosmological contributors.

## 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.