The Swampland program aims to distinguish effective theories which can be completed into
quantum gravity in the ultraviolet from those which cannot. This article forms an introduction …

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 …

We report on gravitational-wave discoveries from compact binary coalescences detected by
Advanced LIGO and Advanced Virgo in the first half of the third observing run (O3a) between …

On May 21, 2019 at 03: 02: 29 UTC Advanced LIGO and Advanced Virgo observed a short
duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise …

On August 17, 2017 at 12∶ 41: 04 UTC the Advanced LIGO and Advanced Virgo
gravitational-wave detectors made their first observation of a binary neutron star inspiral …

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 …

We describe the observation of GW170104, a gravitational-wave signal produced by the
coalescence of a pair of stellar-mass black holes. The signal was measured on January 4 …

On August 14, 2017 at 10∶ 30: 43 UTC, the Advanced Virgo detector and the two Advanced
LIGO detectors coherently observed a transient gravitational-wave signal produced by the …

Abstract The Einstein Telescope (ET), a proposed European ground-based gravitational-
wave detector of third-generation, is an evolution of second-generation detectors such as …

Following a major upgrade, the two advanced detectors of the Laser Interferometer
Gravitational-wave Observatory (LIGO) held their first observation run between September …