The collection of individually resolvable gravitational wave (GW) events makes up a tiny
fraction of all GW signals that reach our detectors, while most lie below the confusion limit …

A stochastic background of gravitational waves could be created by the superposition of a
large number of independent sources. The physical processes occurring at the earliest …

We report results of a search for an isotropic gravitational-wave background (GWB) using
data from Advanced LIGO's and Advanced Virgo's third observing run (O3) combined with …

Extended Theories of Gravity can be considered as a new paradigm to cure shortcomings of
General Relativity at infrared and ultraviolet scales. They are an approach that, by …

We report results from searches for anisotropic stochastic gravitational-wave backgrounds
using data from the first three observing runs of the Advanced LIGO and Advanced Virgo …

Beyond Einstein's Gravity is a graduate level introduction to extended theories of gravity and
cosmology, including variational principles, the weak-field limit, gravitational waves …

The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO) is to detect and
study gravitational waves (GWs) of astrophysical origin. Direct detection of GWs holds the …

Beyond individually resolvable gravitational wave events such as binary black hole and
binary neutron star mergers, the superposition of many more weak signals coming from a …

Significant progress has been made in recent years on the development of gravitational-
wave detectors. Sources such as coalescing compact binary systems, neutron stars in low …

We develop a detailed anisotropic model for the astrophysical gravitational-wave
background, including binary mergers of two stellar-mass black holes, two neutron stars, or …