Work

Spinning Black Holes in Modified Gravity via Spectral Methods

Year: 2025

Type: article

Abstract: Rapidly rotating black-hole spacetimes outside general relativity are key to many tests of Einstein's theory. We here develop an efficient spectral method to represent such spacetimes analytically, in closed-form, and to high accuracy, in a large class of effective-field-theory extensions of general relativity. We exemplify this method by constructing, for the first time, closed-form and analytic representations of spinning black holes in scalar-Gauss-Bonnet, dynamical Chern-Simons, and axidilaton gravity to an accuracy better than 10^{-8} for all dimensionless spins below 0.99.

Source: Physical Review Letters

DOI: 10.1103/6z43-xdv7

Authors: Kelvin Ka-Ho Lam, Adrian Ka-Wai Chung, Nicolás Yunes

Institution: University of Illinois Urbana-Champaign

Language: English

Topic: Pulsars and Gravitational Waves Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, National Aeronautics and Space Administration, Simons Foundation, University of Illinois at Urbana-Champaign

Awards: Probing Extreme Gravity with Gravitational Waves, Probing Gravity and Matter with Gravitational Waves, G6703280108, G6955217840, G90037819