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GR: Fachverband Gravitation und Relativitätstheorie
GR 8: GW III
GR 8.3: Vortrag
Mittwoch, 2. April 2025, 14:10–14:30, ZHG007
Systematic Biases in Estimating the Properties of Black Holes Due to Inaccurate Gravitational-Wave Models: Part II — 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, Am Mühlenberg 1, 14476 Potsdam — 2Dept. 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.
This talk is part 2 of two talks presenting an in-depth study of the impact of parameter estimation biases due to imperfect waveform models. Using the techniques presented in part 1, we analyse in depth three prototypical binaries expected to occur in future GW detectors, and find potentially large errors in the estimated parameters (among them component masses and distance) if today's waveform models are utilised. We furthermore highlight were in BBH parameter space significant parameter estimation errors are most likely, and how widespread and how severe they are.
Keywords: gravitational waves; binary black hole mergers; waveform systematics; parameter estimation