Numerical relativity surrogate model with memory effects and post-Newtonian hybridization [PDF]
Physical Review D, 2023 Numerical relativity simulations provide the most precise templates for the gravitational waves produced by binary black hole mergers. However, many of these simulations use an incomplete waveform extraction technique -- extrapolation -- that fails to ...
Jooheon Yoo +14 more
semanticscholar +1 more source
Searching for ringdown higher modes with a numerical relativity-informed post-merger model [PDF]
The European Physical Journal C, 2023 Robust measurements of multiple black hole vibrational modes provide a unique opportunity to characterise gravity in extreme curvature and dynamical regimes, to better investigate the nature of compact objects and search for signs of new physics.
V. Gennari, G. Carullo, W. Del Pozzo
semanticscholar +1 more source
Adaptive hp refinement for spectral elements in numerical relativity [PDF]
Physical Review D, 2023 When a numerical simulation has to handle a physics problem with a wide range of time-dependent length scales, dynamically adaptive discretizations can be the method of choice. We present a major upgrade to the numerical relativity code bamps in the form
Sarah Renkhoff +3 more
semanticscholar +1 more source
Strong-field scattering of two black holes: Numerical relativity meets post-Minkowskian gravity [PDF]
Physical Review D, 2022 We compare numerical relativity (NR) data on the scattering of equal-mass, non-spinning binary black holes to various analytical predictions based on post-Minkowskian (PM) results.
T. Damour, P. Rettegno
semanticscholar +1 more source
Targeted large mass ratio numerical relativity surrogate waveform model for GW190814 [PDF]
Physical Review D, 2022 Gravitational wave observations of large mass ratio compact binary mergers like GW190814 highlight the need for reliable, high-accuracy waveform templates for such systems.
Jooheon Yoo +7 more
semanticscholar +1 more source
Eccentric binary black holes: Comparing numerical relativity and small mass-ratio perturbation theory [PDF]
Physical Review D, 2022 The modelling of unequal mass binary black hole systems is of high importance to detect and estimate parameters from these systems. Numerical relativity (NR) is well suited to study systems with comparable component masses, $m_1\sim m_2$, whereas small ...
A. Ramos-Buades +6 more
semanticscholar +1 more source
Study of the intermediate mass ratio black hole binary merger up to 1000:1 with numerical relativity [PDF]
Classical and quantum gravity, 2022 We explicitly demonstrate that current numerical relativity techniques are able to accurately evolve black hole binaries with mass ratios of the order of 1000:1. This proof of principle is relevant for future third generation gravitational wave detectors
C. Lousto, J. Healy
semanticscholar +1 more source
CTTK: a new method to solve the initial data constraints in numerical relativity [PDF]
Classical and quantum gravity, 2022 In numerical relativity simulations with non-trivial matter configurations, one must solve the Hamiltonian and momentum constraints of the ADM formulation for the metric variables in the initial data.
Josu C. Aurrekoetxea +2 more
semanticscholar +1 more source
Resonant tides in binary neutron star mergers: Analytical-numerical relativity study [PDF]
Physical Review D, 2022 Resonant excitations of $f$-modes in binary neutron star coalescences influence the gravitational waves (GWs) emission in both quasicircular and highly eccentric mergers and can deliver information on the star interior.
R. Gamba, S. Bernuzzi
semanticscholar +1 more source
Fixing the BMS frame of numerical relativity waveforms with BMS charges [PDF]
Physical Review D, 2022 The Bondi-van der Burg-Metzner-Sachs (BMS) group, which uniquely describes the symmetries of asymptotic infinity and therefore of the gravitational waves that propagate there, has become increasingly important for accurate modeling of waveforms.
Keefe Mitman +10 more
semanticscholar +1 more source