Abstract The Laser Interferometer Space Antenna (LISA) will be a transformative experiment
for gravitational wave astronomy, and, as such, it will offer unique opportunities to address …

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 …

The third Gravitational-Wave Transient Catalog (GWTC-3) describes signals detected with
Advanced LIGO and Advanced Virgo up to the end of their third observing run. Updating the …

We analyze the population properties of black holes (BHs) and neutron stars (NSs) in
compact binary systems using data from the LIGO–Virgo Gravitational-Wave Transient …

While most of the compact-binary mergers detected by LIGO and Virgo are expected to
consist of first-generation black holes formed from the collapse of stars, others might instead …

We report the first plausible optical electromagnetic counterpart to a (candidate) binary black
hole merger. Detected by the Zwicky Transient Facility, the electromagnetic flare is …

The central engines of active galactic nuclei (AGNs) are powered by accreting supermassive
black holes, and while AGNs are known to play an important role in galaxy evolution, the key …

70 AIM, UMR 7158, CEA/DRF, CNRS, Université Paris Diderot, Irfu/Service d'Astrophysique,
Centre de Saclay, FR-91191 Gif-sur-Yvette, France

We present a broad-band spectral analysis of the joint XMM–Newton and Nuclear
Spectroscopic Telescope Array observational campaign of the narrow-line Seyfert 1 SWIFT …

The LIGO/Virgo Collaboration has recently observed GW190521, the first binary black hole
merger with at least the primary component mass in the mass gap predicted by the pair …