GWTC-4: Compact Binary Coalescences Observed by LIGO and Virgo During the First part of the Fourth Observing Run

These pages are meant to complement the data and figures released within the GWTC-4 catalog with additional information produced with cWB. The results shown here are obtained with the generic burst configuration of cWB, with no specific optimization for CBC signals, and cover a subset of 23 events selected from the 218 detections in GWTC-4.0 according to the following criteria:

at least two detectors contributing to the detection,
the NRSUR7DQ4 waveform model was used in parameter estimation,
network SNR > 10,
redshifted chirp mass (1 + z) M_chirp > 15 M_⊙.

Comparison between un-modeled and modeled waveform reconstructions: cWB vs CBC-PE

cWB is a wavelet-based burst method while CBC-PE is a parameter estimation method that uses the best available binary coalescence models. The comparisons shown here are performed between the cWB generic burst wavelet-based reconstruction and the CBC-PE results on the models listed in the GWTC-4 catalog.

Summary plots

cWB and CBC-PE comparisons on maximum likelihood reconstructed waveforms

Summary plots	Content
	Max likelihood whitened waveforms in time-domain
	Max likelihood whitened waveform residuals in time-domain
	90% skymaps (cWB vs CBC-PE skymaps)
	cWB 90% confidence intervals (time-domain)
	cWB 90% confidence intervals (frequency-domain)
	cWB 90% confidence intervals (time envelope)
	Strain noise amplitude spectral density