We update the constraints on the fraction of the Universe that may have gone into primordial
black holes (PBHs) over the mass range 10− 5 to 10 50 g. Those smaller than∼ 10 15 g …

In the recent years, primordial black holes (PBHs) have emerged as one of the most
interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could …

We present results of an all-sky search for continuous gravitational waves which can be
produced by spinning neutron stars with an asymmetry around their rotation axis, using data …

We calculate the gravitational waves (GWs) induced by the density fluctuations due to the
inhomogeneous distribution of primordial black holes (PBHs) in the case where PBHs …

The data recently released by the North American Nanohertz Observatory for Gravitational
Waves (NANOGrav) provides compelling evidence supporting the existence of a stochastic …

We study the stochastic gravitational wave (GW) background induced by the primordial
scalar perturbation with the spectrum having a lognormal peak of width Δ at k= k*. We derive …

Recently, strong evidence for a gravitational-wave background has been reported by
collaborations of pulsar timing arrays (PTAs). In the framework of scalar-induced …

Primordial black holes are under intense scrutiny since the detection of gravitational waves
from mergers of Solar-mass black holes in 2015. More recently, the development of …

Abstract Recently, the North American Nanohertz Observatory for Gravitational Waves
(NANOGrav) claimed the detection of a stochastic common-spectrum process of the pulsar …

In this paper, we update the peak theory for the estimation of the primordial black hole (PBH)
abundance, particularly by implementing the critical behavior in the estimation of the PBH …