Scalarization of isolated black holes in scalar Gauss-Bonnet theory in the fixing-the-equations approach
Year: 2024
Type: article
Abstract: One of the most promising avenues to perform numerical evolutions in theories beyond general relativity is the approach, a proposal in which new “driver” equations are added to the evolution equations in a way that allows for stable numerical evolutions. In this direction, we extend the numerical relativity code p to evolve a “fixed” version of scalar Gauss-Bonnet theory in the decoupling limit, a phenomenologically interesting theory that allows for hairy black hole solutions in vacuum. We focus on isolated black hole systems both with and without linear and angular momentum, and propose a new driver equation to improve the recovery of such stationary solutions. We demonstrate the effectiveness of the latter by numerically evolving black holes that undergo spontaneous scalarization using different driver equations. Finally, we evaluate the accuracy of the obtained solutions by comparing with the original unaltered theory. Published by the American Physical Society 2024
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Awards: WOU-MMA: Gravitational Radiation and Relativistic Astrophysics, G6068339652, G6588448342, WOU-MMA: Maximizing Science Output of LIGO: Data Analysis and Improved Detectors, Collaborative Research: Elements: A task-based code for multiphysics problems in astrophysics at exascale, G8397178256, RUI: Next-Generation Numerical Relativity for Future Gravitational-Wave Observatories
OpenAlex ID: W4392828282