Dealing with delicate issues in waveforms calculations

TL;DR

This paper examines the calculation of gravitational radiation via Weyl scalars, identifying gauge and tetrad ambiguities, and proposes simple corrections to improve accuracy in waveform computations.

Contribution

It highlights potential issues in waveform calculations due to gauge and tetrad ambiguities and offers straightforward solutions to mitigate these problems.

Findings

Identified gauge and tetrad ambiguities in waveform calculations.

Proposed simple correction methods to address these ambiguities.

Improved reliability of gravitational waveform computations.

Abstract

We revisit the calculation of gravitational radiation through the use of Weyl scalars. We point out several possible problems arising from gauge and tetrad ambiguities and ways to address them. Our analysis indicates how, relatively simple corrections can be introduced to remove these ambiguities.