The first generation of stars, often called Population III (or Pop III), form from metal-free
primordial gas at redshifts z∼ 30 and below. They dominate the cosmic star-formation …

We present our current best estimate of the plausible observing scenarios for the Advanced
LIGO, Advanced Virgo and KAGRA gravitational-wave detectors over the next several years …

The first observation of gravitational waves from the inspiral of a binary neutron star (BNS)
200 system on 2017 August 17 (Abbott et al. 2017b) was a major landmark in multi …

Gravitational waves enable tests of general relativity in the highly dynamical and strong-field
regime. Using events detected by LIGO-Virgo up to 1 October 2019, we evaluate the …

On September 14, 2015 at 09: 50: 45 UTC the two detectors of the Laser Interferometer
Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave …

Gravitational waves were discovered with the detection of binary black-hole mergers and
they should also be detectable from lower-mass neutron-star mergers. These are predicted …

On September 14, 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO)
detected a gravitational-wave transient (GW150914); we characterize the properties of the …

Gravitational waves provide a unique tool for observational astronomy. While the first LIGO–
Virgo catalogue of gravitational-wave transients (GWTC-1) contains 11 signals from black …

Pulsar timing data used to provide upper limits on a possible stochastic gravitational wave
background (SGWB). However, the NANOGrav Collaboration has recently reported strong …

On August 17, 2017, the Advanced LIGO and Advanced Virgo gravitational-wave detectors
observed a low-mass compact binary inspiral. The initial sky localization of the source of the …