Numerical relativity simulations in the era of the Einstein Telescope

TL;DR

This paper discusses the challenges and requirements for numerical relativity simulations of compact binaries to meet the high precision demands of future gravitational-wave detectors like the Einstein Telescope.

Contribution

It provides an analysis of the current state and future needs of NR simulations to support advanced gravitational-wave astronomy with ET.

Findings

NR simulations must improve in accuracy for ET's sensitivity

Parameter space coverage needs expansion for future detectors

Significant computational and methodological advancements are required

Abstract

Numerical-relativity (NR) simulations of compact binaries are expected to be an invaluable tool in gravitational-wave (GW) astronomy. The sensitivity of future detectors such as the Einstein Telescope (ET) will place much higher demands on NR simulations than first- and second-generation ground-based detectors. We discuss the issues facing compact-object simulations over the next decade, with an emphasis on estimating where the accuracy and parameter space coverage will be sufficient for ET and where significant work is needed.