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 …

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 …

The ever-increasing number of detections of gravitational waves (GWs) from compact
binaries by the Advanced LIGO and Advanced Virgo detectors allows us to perform ever …

The detections of gravitational-wave (GW) signals from compact binary coalescence by
ground-based detectors have opened up the era of GW astronomy. These observations …

Black hole spectroscopy is the program to measure the complex gravitational wave
frequencies of merger remnants, and to quantify their agreement with the characteristic …

The no-hair conjecture in general relativity (GR) states that the properties of an astrophysical
Kerr black hole (BH) are completely described by its mass and spin. As a consequence, the …

We reduce the study of perturbations of rotating black holes in higher-derivative extensions
of general relativity to a system of decoupled radial equations that stem from a set of …

One of the most promising strategies to test gravity in the strong-field, large curvature regime
is gravitational spectroscopy: the measurement of black hole quasinormal modes from the …

We study the stability of quasinormal modes (QNM) in asymptotically flat black hole
spacetimes by means of a pseudospectrum analysis. The construction of the Schwarzschild …

We study gravitational perturbations of slowly rotating black holes in a general effective-field-
theory extension of general relativity that includes up to eight-derivative terms. We show that …