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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 8.
Results from the TIGER test on the intermediate and merger–ringdown part of the signal using the waveform XPHM. The grey dashed lines indicate the GR prediction at 0. For the intermediate coefficient ﹩\delta {\hat{b}}_{i}﹩, the GR prediction value of zero lies within the 90% credible intervals, but for the merger–ringdown coefficient, ﹩\delta {\hat{c}}_{\ell }﹩, the GR prediction lies outside the 90% credible intervals. For each of these intermediate and merger–ringdown coefficient, the TIGER test employs uniform priors in [−20, 20].
© 2026. The Author(s). Published by the American Astronomical Society.