Abstract The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good
description of a wide range of astrophysical and cosmological data. However, there are a …

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

The gravitational wave strain emitted by a perturbed black hole (BH) ringing down is
typically modeled analytically using first-order BH perturbation theory. In this Letter, we show …

Quantum noise imposes a fundamental limitation on the sensitivity of interferometric
gravitational-wave detectors like LIGO, manifesting as shot noise and quantum radiation …

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark
discovery, potentially providing a significant clue to some of our most basic, big-picture …

Gravitational waves from binary black hole and neutron star mergers are being regularly
detected. As of 2021, 90 confident gravitational wave detections have been made by the …

We present SEOBNRv5HM, a more accurate and faster inspiral-merger-ringdown
gravitational waveform model for quasicircular, spinning, nonprecessing binary black holes …

We study extreme mass-ratio binary systems in which a stellar mass compact object spirals
into a supermassive black hole surrounded by a scalar cloud. Scalar clouds can form …

We present the first systematic comparison between gravitational waveforms emitted by
inspiralling, quasicircular and nonspinning black hole binaries computed with three different …