Max Planck Institute for Gravitational Physics (Albert Einstein Institute)

## Talks by Antoni Ramos-Buades

## Comparison of eccentric numerical relativity simulations to small mass-ratio perturbation theory

Antoni Ramos-Buades
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)

In this work we compare two approaches to modeling binary black holes (BBHs): 1) small mass-ratio (SMR) perturbation theory, and 2) numerical relativity (NR). We extend recent work on combining information from quasicircular nonspinning NR simulations of BBHs with results from SMR perturbation theory to nonspinning eccentric BBHs. We produce a dataset of long and accurate eccentric nonspinning NR simulations with the Spectral Einstein Code (SpEC) from mass ratios 1 to 10, and eccentricities up to 0.7.