Yosef Zlochower

TL;DR: In this paper, the authors explore how a recently developed analytical black-hole binary spacetime can be extended using numerical simulations to go beyond the slow-inspiral phase, and they find that small constraint violations can have large dynamical effects, but these can be removed by using a constraint-damping system like the conformal covariant formulation of the Z4 system.

TL;DR: In this paper, an enhancement of the Regge?Wheeler?Zerilli formalism for first-order perturbations about a Schwarzschild background was proposed, which includes firstorder corrections due to the background black-hole spin in the blackhole perturbation approach.

TL;DR: In this article, the authors report the modeling of GW150914 with numerical-relativity simulations, using black-hole masses and spins consistent with those inferred from LIGO's measurement.

TL;DR: In this article, the authors discuss results obtained from the initial round of testbeds for numerical relativity which was proposed in the first paper of the Apples with Apples Alliance.

TL;DR: In generalizing Patchwork to be compatible with arbitrary order time integration, PatchworkMHD and PatchworkWave have significantly improved the interpatch interpolation accuracy by removing an interpolation of interpolated data feedback present in the original Patchwork code.