Heidelberg 2022 – scientific programme
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GR: Fachverband Gravitation und Relativitätstheorie
GR 9: Gravitational Waves
GR 9.2: Talk
Wednesday, March 23, 2022, 16:35–16:55, GR-H2
New generation effective-one-body waveforms for binary black holes with non-precessing spins — Serguei Ossokine1, Deyan Mihaylov1, •Lorenzo Pompili1, Alessandra Buonanno1,2, Michael Pürrer1, and Mohammed Khalil1,2 — 1Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, Potsdam 14476, Germany — 2Department of Physics, University of Maryland, College Park, Maryland 20742, USA
We present an improved inspiral-merger-ringdown gravitational waveform model for quasi-circular, spinning, non-precessing binary black holes within the effective-one-body (EOB) formalism. Compared to its predecessor SEOBNRv4HM the waveform model i) incorporates recent high-order post-Newtonian results in the inspiral, with improved factorizations ii) includes the gravitational modes (ℓ, |m|)=(3,2),(4,3), in addition to the (ℓ, |m|)=(2,2),(3,3),(2,1) (4,4),(5,5) modes already implemented in SEOBNRv4HM iii) has been recalibrated to larger mass ratios and spins using a catalog of 441 numerical-relativity (NR) simulations, and to 13 additional waveforms from black-hole perturbation theory. The accuracy of the waveform model is quantified by computing the unfaithfulness against the NR catalog used for its construction. The waveform model has been implemented in a new Python framework, that makes it easily extensible to include spin-precession and eccentricity effects, thus making it the starting point for a new generation of EOB waveform models (SEOBNRv5) to be employed for upcoming observing runs of the LIGO-Virgo-KAGRA detectors.