We review numerous arguments for primordial black holes (PBHs) based on observational
evidence from a variety of lensing, dynamical, accretion and gravitational-wave effects. This …

Abstract The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders
about the fundamental theory of nature at play in the extreme gravity regime, where the …

Abstract The Einstein Telescope (ET), the European project for a third-generation
gravitational-wave detector, has a reference configuration based on a triangular shape …

We provide a review on the state-of-the-art of gravitational waves induced by primordial
fluctuations, so-called induced gravitational waves. We present the intuitive physics behind …

This Horizon Study describes a next-generation ground-based gravitational-wave
observatory: Cosmic Explorer. With ten times the sensitivity of Advanced LIGO, Cosmic …

Recent population studies have searched for a subpopulation of primordial black holes
(PBHs) in the gravitational-wave (GW) events so far detected by LIGO/Virgo/KAGRA (LVK) …

We develop an exact formalism for the computation of the abundance of primordial black
holes (PBHs) in the presence of local non-Gaussianity (NG) in the curvature perturbation …

While most of the compact-binary mergers detected by LIGO and Virgo are expected to
consist of first-generation black holes formed from the collapse of stars, others might instead …

Population-synthesis codes are an unique tool to explore the parameter space of massive
binary star evolution and binary compact object (BCO) formation. Most population-synthesis …

Primordial black holes (PBHs) represent a natural candidate for one of the components of
the dark matter (DM) in the Universe. In this review, we shall discuss the basics of their …