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-wave physics and astronomy in the 2020s and 2030s

M Bailes, BK Berger, PR Brady, M Branchesi… - Nature Reviews …, 2021 - nature.com
The 100 years since the publication of Albert Einstein's theory of general relativity saw
significant development of the understanding of the theory, the identification of potential …

First Sagittarius A* event horizon telescope results. VI. Testing the black hole metric

K Akiyama, A Alberdi, W Alef, JC Algaba… - The Astrophysical …, 2022 - iopscience.iop.org
Astrophysical black holes are expected to be described by the Kerr metric. This is the only
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …

First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric

Event Horizon Telescope Collaboration - arxiv preprint arxiv …, 2023 - arxiv.org
Astrophysical black holes are expected to be described by the Kerr metric. This is the only
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …

Improved gravitational-wave constraints on higher-order curvature theories of gravity

SE Perkins, R Nair, HO Silva, N Yunes - Physical Review D, 2021 - APS
Gravitational wave observations of compact binaries allow us to test general relativity (and
modifications thereof) in the strong and highly dynamical field regime of gravity. Here, we …

Ghost instabilities in self-interacting vector fields: The problem with proca fields

K Clough, T Helfer, H Witek, E Berti - Physical review letters, 2022 - APS
Massive vector fields feature in several areas of particle physics, eg, as carriers of weak
interactions, dark matter candidates, or an effective description of photons in a plasma. Here …

Towards precision measurements of accreting black holes using X-ray reflection spectroscopy

C Bambi, LW Brenneman, T Dauser, JA Garcia… - Space Science …, 2021 - Springer
Relativistic reflection features are commonly observed in the X-ray spectra of accreting black
holes. In the presence of high quality data and with the correct astrophysical model, X-ray …

Spin-induced dynamical scalarization, descalarization, and stealthness in scalar-Gauss-Bonnet gravity during a black hole coalescence

M Elley, HO Silva, H Witek, N Yunes - Physical Review D, 2022 - APS
Particular couplings between a scalar field and the Gauss-Bonnet invariant lead to
spontaneous scalarization of black holes. Here, we continue our work on simulating this …

First sagittarius A* event horizon telescope results. VI. Testing the black hole metric

V Ramakrishnan, T Savolainen… - Astrophysical Journal …, 2022 - research.aalto.fi
Astrophysical black holes are expected to be described by the Kerr metric. This is the only
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …

Adaptive analytical ray tracing of black hole photon rings

A Cárdenas-Avendaño, A Lupsasca, H Zhu - Physical Review D, 2023 - APS
Recent interferometric observations by the Event Horizon Telescope have resolved the
horizon-scale emission from sources in the vicinity of nearby supermassive black holes …