Coalescing primordial binary black holes with log-normal mass spectrum
Abstract
Primordial black holes created in the early Universe can constitute a substantial fraction of dark matter and serve as seeds for early galaxy formation. Binary primordial black holes with masses of the order of a few dozen solar masses can explain the observed LIGO/Virgo gravitational-wave events. In this Letter, we show that primordial black holes with log-normal mass spectrum centered at simultaneously explain both the chirp mass distribution of the detected LIGO/Virgo binary black holes and the differential chirp mass distribution of merging binaries as inferred from the LIGO/Virgo observations. The obtained parameters of log-normal mass spectrum of primordial black holes also give the fraction of seeds with required to explain the observed population of supermassive black holes at .
Cite
@article{arxiv.2101.02475,
title = {Coalescing primordial binary black holes with log-normal mass spectrum},
author = {Konstantin Postnov and Alexander Dolgov and Nikita Mitichkin and Ivan Simkin},
journal= {arXiv preprint arXiv:2101.02475},
year = {2021}
}
Comments
4 pages, 2 figures, to be submitted