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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 10.
The 90% credible regions for the posterior probability distribution of the fractional deviations in the frequency and damping time of the (2, 2, 0) QNM, ﹩(\delta {\hat{f}}_{220},\delta {\hat{\tau }}_{220})﹩ for GW230814. The contours and corresponding marginalized posteriors are shown for the pSEOBNR (dashed–dotted maroon; see Section 3.3) and pyRing-KerrPostmerger (solid black; see Section 3.4) analyses. The black square denotes the GR prediction of ﹩\delta {\hat{f}}_{220}=\delta {\hat{\tau }}_{220}=0﹩.
© 2026. The Author(s). Published by the American Astronomical Society.