Binary Black Hole Waveform Extraction at Null Infinity

TL;DR

This paper discusses developing a standardized, efficient waveform extraction tool for numerical relativity, enabling better comparison of gravitational waveforms from different Einstein equation formulations.

Contribution

It introduces a computational module that interfaces Cauchy and characteristic codes, facilitating standardized waveform extraction in numerical relativity.

Findings

Prototype interface developed for waveform extraction

Enables comparison across different Einstein equation formulations

Aims to improve consistency in gravitational waveform analysis

Abstract

In this work, we present a work in progress towards an efficient and economical computational module which interfaces between Cauchy and characteristic evolution codes. Our goal is to provide a standardized waveform extraction tool for the numerical relativity community which will allow CCE to be readily applied to a generic Cauchy code. The tool provides a means of unambiguous comparison between the waveforms generated by evolution codes based upon different formulations of the Einstein equations and different numerical approximation.