We have analyzed LIGO-Virgo-KAGRA (LVK) gravitational-wave events that show some evidence of eccentricity from TEOBResumS waveform-model-based parameter estimations and have performed an independent parameter estimation analysis using direct comparison with full numerical-relativity waveforms from our bank of nearly 2000 simulations of binary black holes. We have used the rapid iterative fitting algorithm for Bayesian parameter estimation and found that GW200208_22 favor eccentricities $e_{20}=0.198_{-0.180}^{+0.119}$ upon entering the LVK band at $\sim 20\mathrm{Hz}$ within a 90% confidence interval. Within this event analysis we have employed 42 new targeted full numerical-relativity (NR) simulations and we have thus found a NR waveform with a higher likelihood than identified by model-based analysis, with an estimated eccentricity at 20 Hz, $e_{20}=0.200$, thus reinforcing the eccentric hypothesis of the binary. We have also used our full bank of numerical waveforms without additional targeted waveforms on GW190620 finding that the estimate favors eccentricities at 10 Hz in $e_{10}=0.190_{-0.186}^{+0.046}$. New specifically targeted simulations will be required to narrow these eccentricity ranges.

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• Gravitational waves
• Numerical relativity