[HTML][HTML] The first stars: formation, properties, and impact

RS Klessen, SCO Glover - Annual Review of Astronomy and …, 2023 - annualreviews.org
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 …

[HTML][HTML] Cosmology with the laser interferometer space antenna

P Auclair, D Bacon, T Baker, T Barreiro… - Living Reviews in …, 2023 - Springer
Abstract The Laser Interferometer Space Antenna (LISA) has two scientific objectives of
cosmological focus: to probe the expansion rate of the universe, and to understand …

[HTML][HTML] The NANOGrav 15 yr data set: Constraints on supermassive black hole binaries from the gravitational-wave background

G Agazie, A Anumarlapudi, AM Archibald… - The Astrophysical …, 2023 - iopscience.iop.org
The NANOGrav 15 yr data set shows evidence for the presence of a low-frequency
gravitational-wave background (GWB). While many physical processes can source such low …

[HTML][HTML] New horizons for fundamental physics with LISA

KG Arun, E Belgacem, R Benkel, L Bernard… - Living Reviews in …, 2022 - Springer
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 from extreme-mass-ratio systems in astrophysical environments

V Cardoso, K Destounis, F Duque, RP Macedo… - Physical Review Letters, 2022 - APS
We establish a generic, fully relativistic formalism to study gravitational-wave emission by
extreme-mass-ratio systems in spherically symmetric, nonvacuum black hole spacetimes …

Gravitational waveforms for compact binaries from second-order self-force theory

B Wardell, A Pound, N Warburton, J Miller, L Durkan… - Physical Review Letters, 2023 - APS
We produce gravitational waveforms for nonspinning compact binaries undergoing a
quasicircular inspiral. Our approach is based on a two-timescale expansion of the Einstein …

[HTML][HTML] UNCOVER Spectroscopy Confirms the Surprising Ubiquity of Active Galactic Nuclei in Red Sources at z> 5

JE Greene, I Labbe, AD Goulding… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract The James Webb Space Telescope is revealing a new population of dust-reddened
broad-line active galactic nuclei (AGN) at redshifts z≳ 5. Here we present deep …

Quasi-periodic eruptions from impacts between the secondary and a rigidly precessing accretion disc in an extreme mass-ratio inspiral system

A Franchini, M Bonetti, A Lupi, G Miniutti… - Astronomy & …, 2023 - aanda.org
X-ray quasi-periodic eruptions (QPEs) represent a recently discovered example of extreme
X-ray variability associated with supermassive black holes. These are high-amplitude bursts …

Probing accretion physics with gravitational waves

L Speri, A Antonelli, L Sberna, S Babak, E Barausse… - Physical Review X, 2023 - APS
Gravitational-wave observations of extreme mass ratio inspirals (EMRIs) offer the
opportunity to probe the environments of active galactic nuclei (AGN) through the torques …

Observing GW190521-like binary black holes and their environment with LISA

L Sberna, S Babak, S Marsat, A Caputo, G Cusin… - Physical Review D, 2022 - APS
Binaries of relatively massive black holes like GW190521 have been proposed to form in
dense gas environments, such as the disks of active galactic nuclei (AGNs), and they might …