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GW230814: Investigation of a Loud Gravitational-wave Signal Observed with a Single Detector
A. G. Abac et al 2026 The Astrophysical Journal Letters 1004 .
Caption: Figure 15.
Sky-maximized, SNR-weighted unfaithfulness of the NRSur, SEOBNR, XPHM, and XO4a waveform models with respect to 53 simulations (52 from the LVK NR-SXS catalog and the targeted simulation produced as part of this work) compatible with the parameters of GW230814, marginalized over six values of inclination. Dashed vertical lines indicate the 90th percentile of the unfaithfulness distribution for each model (note that the XPHM and XO4a lines overlap); black vertical lines denote the faithfulness thresholds for D = 8 (dotted) and D = 1 (solid). The NRSur model is the most faithful, with >99% of the simulations having unfaithfulness below the threshold of 2.3 × 10−3, corresponding to D = 8 at the SNR of GW230814.
© 2026. The Author(s). Published by the American Astronomical Society.