Speaker
Simon Biot
(ULB)
Description
The dynamics of early primordial black hole (PBH) binaries with an extended mass distribution are investigated. Specifically, we examine the perturbations and disruptions from the low-mass background population induced by such mass functions. Using dedicated Monte-Carlo simulations, new calculations of the so-called merger rate suppression factors are presented. Our results suggest that the limits on the PBH abundance from gravitational wave observations should be rethought for extended mass distributions and re-open the possibility that a sizable dark matter fraction is constituted of solar-mass PBHs.
Authors
Simon Biot
(ULB)
Sébastien Clesse