We show that the recent NANOGrav result can be interpreted as a stochastic gravitational wave signal associated to formation of primordial black holes from high-amplitude curvature perturbations. The indicated amplitude and power of the gravitational wave spectrum agrees well with formation of primordial seeds for supermassive black holes.
@article{arxiv.2009.07832,
title = {Did NANOGrav see a signal from primordial black hole formation?},
author = {Ville Vaskonen and Hardi Veermäe},
journal= {arXiv preprint arXiv:2009.07832},
year = {2021}
}
Comments
7 pages, 4 figures. Minor corrections, results unchanged