Shranjeno v:
| Glavni avtor: | |
|---|---|
| Format: | Preprint |
| Izdano: |
2023
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| Teme: | |
| Online dostop: | https://arxiv.org/abs/2305.15439 |
| Oznake: |
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Kazalo:
- Gravitational waves provide a unique opportunity to test gravity in the dynamical and nonlinear regime. We present a parametrized test of general relativity (GR) that introduces generic deviations to the plunge, merger and ringdown stages of binary-black-hole coalescences. The novel feature of the model is that it can capture signatures of beyond-GR physics in the plunge-merger phase. We use the model to provide constraints on the plunge-merger parameters from the analysis of GW150914. Alarmingly, we find that GW200129 shows a strong violation of GR. We interpret this result as a false violation of GR either due to waveform systematics (mismodeling of spin precession) or data-quality issues.