Speaker: Bhooshan Gadre (Max Planck Institute, Potsdam)
Title: A fully precessing higher mode surrogate model of effective one body waveforms
We can recover the masses and spins of binary black hole mergers using Bayesian inference and a model of the emitted gravitational waveform. Accurate generic waveform models can be used to infer the binaries’ spins and thus shed light on astrophysical formation scenarios. However, for accurate time-domain models inference runs are typically very computationally demanding and can take from weeks to months. Here, we present a surrogate model of fully precessing time-domain effective one body (EOB) waveforms including sub-dominant modes. This surrogate is two orders of magnitude faster than the underlying time-domain model. We follow an approach similar to that used to build recent numerical relativity surrogate models. Our surrogate is 5000M in duration and covers mass ratios up to 20 and dimensionless spins up to 0.8. The surrogate errors are less than 1%.
Room: Sala de Reuniões e Seminários (2nd Floor of physics building)