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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 13.
The accumulation of Fisher information about the ﹩\delta {\hat{\tau }}_{220}﹩ parameter over time (partial sums in blue and terms in the sum in green from the final term in Equation (6)) for a DS model with f = 250 Hz and τ = 3.5 ms, starting at t − tLLO = 10tM. Each peak of the green curve corresponds to a peak or trough of the waveform shown in Figure 12, with the highest peak corresponding to the cycle of the signal indicated by the purple arrow in that figure. A DS analysis in the time domain is thus particularly sensitive in its damping time estimate to the times that seem to drive the deviation identified in the pSEOBNR analysis at t − tLLO = 9 ms.
© 2026. The Author(s). Published by the American Astronomical Society.