Phase effects from strong gravitational lensing of gravitational waves

@article{Ezquiaga2020PhaseEF,
  title={Phase effects from strong gravitational lensing of gravitational waves},
  author={Jose Mar{\'i}a Ezquiaga and Daniel E. Holz and Wayne Hu and Macarena Lagos and Robert M. Wald},
  journal={arXiv: General Relativity and Quantum Cosmology},
  year={2020}
}
Assessing the probability that two or more gravitational wave (GW) events are lensed images of the same source requires an understanding of the properties of the lensed images. For short enough wavelengths where wave effects can be neglected, lensed images will generically have a fixed relative phase shift that needs to be taken into account in the lensing hypothesis. For non-precessing, circular binaries dominated by quadrupole radiation these lensing phase shifts are degenerate with either a… 

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