An update on the Simulating Extreme Spacetimes (SXS) simulation catalog for binary black holes

The coalescence of two black holes as well as gravitational waves cannot be calculated analytically, and so numerical solutions yielding numerical waveforms are arguably the most accurate gravitational waveforms. Numerical waveforms are the basis for numerous inspiral-merger-ringdown waveform models used to detect gravitational waves from coalescing black holes, to estimate the properties of the coalescing binaries, to test general relativity with the observed gravitational waves, and to study systematic errors of parameter estimation. The Simulating Extreme Spacetimes collaboration (SXS) has computed a comprehensive public catalog of numerical waveforms, bolstering the original SXS catalog from 2013 to ~1300 waveforms with mass ratios up to 10.0, effective spins up to 0.998, and averaging 44 cycles long. This talk summarises the current status of the SXS online catalog, including details of its parameter space coverage, assessments of the uncertainties and accuracy of the numerical waveforms, and novel methods for waveform extraction and post-processing.