Daniel A. Hemberger

TL;DR: It is found that the final remnant's mass and spin, as determined from the low-frequency and high-frequency phases of the signal, are mutually consistent with the binary black-hole solution in general relativity.

TL;DR: In this paper, the authors improved the accuracy of the effective-one-body (EOB) waveforms that were employed during the first observing run of Advanced LIGO for binaries of spinning, non-precessing black holes by calibrating them to a set of 141 numerical-relativity (NR) waveform.

TL;DR: A publicly available catalog of 174 numerical binary black hole simulations following up to 35 orbits establishes remarkably good agreement with post-Newtonian precession of orbital and spin directions for two new precessing simulations.

TL;DR: In this article, the authors present a perturbation scheme for numerically integrating beyond-GR theories that have a continuous limit to general relativity in the nonlinear, dynamical, strong-field regime of gravity is one of the major goals of gravitational wave astrophysics Performing precision tests of general relativity (GR) requires numerical inspiral, merger, and ringdown waveforms for binary black hole systems in theories beyond GR.

TL;DR: In this paper, the effects of possible systematic errors in the waveform models on estimates of its source parameters were investigated and no evidence for a systematic bias relative to the statistical error of the original parameter recovery of GW150914 due to modeling approximations or modeling inaccuracies was found.