Modeling compact binary merger waveforms beyond general relativity

The parametrized post-Einsteinian framework modifies inspiral waveform models to incorporate effects beyond general relativity (GR). We extend the existing model into the merger-ringdown regime. The modification introduced here adds a single degree of freedom that corresponds to a change in the binary coalescence time. Other merger properties remain as predicted by GR. We discuss parameter estimation with this model, and how it can be used to extract information from beyond-GR waveforms.

Automated summary

The parametrized post-Einsteinian framework modifies inspiral waveform models to include effects beyond general relativity (GR). The existing model is extended to the merger-ringdown regime. The introduced modification adds a single degree of freedom, corresponding to a change in the binary coalescence time, while other merger properties remain as predicted by GR. We discuss parameter estimation with this model and how it can extract information from beyond-GR waveforms.