Göttingen 2025 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 8: GW III
GR 8.2: Vortrag
Mittwoch, 2. April 2025, 13:50–14:10, ZHG007
Systematic Biases in Estimating the Properties of Black Holes Due to Inaccurate Gravitational-Wave Models: Part I — Arnab Dhani1, •Sebastian H. Völkel1, Alessandra Buonanno1,2, Hector Estelles1, Jonathan Gair1, Harald P. Pfeiffer1, Lorenzo Pompili1, and Alexandre Toubiana1 — 1Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, Potsdam 14476, Germany — 2Department of Physics, University of Maryland, College Park, MD 20742, USA
Gravitational-wave observations of binary black-hole coalescences are expected to address outstanding questions in astrophysics, cosmology, and fundamental physics. Realizing the full discovery potential of upcoming LIGO-Virgo-KAGRA observing runs and new ground-based facilities hinges on accurate waveform models. We present a comprehensive state-of-the-art analysis of binary black hole waveform systematics. Using linear-signal approximation methods and Bayesian analysis, we start to assess our readiness for what lies ahead using two state-of-the-art quasi-circular, spin-precessing models: SEOBNRv5PHM and IMRPhenomXPHM. Future progress in analytical calculations and numerical-relativity simulations, crucial for calibrating the models, must target regions of the parameter space with significant biases to develop more accurate models. Only then can precision gravitational wave astronomy fulfill the promise it holds. In this talk, part 1 of 2, we outline the importance of such studies, introduce waveform modeling and statistical methods. Review and discussion of our results will be provided in another talk as part 2. [arXiv:2404.05811]
Keywords: gravitational waves; binary black hole mergers; waveform systematics; parameter estimation