CBC Samples and Maximum-Posterior Hyperparameters of the FullPop-4.0 Population Model from GWTC-4

This document provides the maximum-posterior hyperparameters for the FullPop-4.0 population model, inferred from the GWTC-4 catalog (https://dcc.ligo.org/LIGO-P2400004/public). The model describes the primary black hole mass distribution as a broken power-law between minimum and maximum masses, with two Gaussian peaks at ∼10 M⊙ and ∼35 M⊙. The file includes the posterior values for mass, spin, and merger-rate hyperparameters. These results allow users to reproduce the GWTC-4 population model and to generate synthetic distributions for compact binary coalescences. For additional resources and visualization tools, see: https://cbc-population-distributions.readthedocs.io/en/latest/. This is the CBC distribution drawn from the hyperparameters (BP2). We drew about 1,165,080 samples of intrinsic parameters, component masses ($m_1, m_2$) and dimensionless spin components, including binaryneutron stars, neutron star black hole systems, and binary black holes. These data can be used to simulate and predict observing scenarios for future observational campaigns, as well as to estimate the implications for electromagnetic counterparts. The code used to generate these samples is available in the observing scenariosThe hyperparameter : baseline5_widesigmachi2_mass_NotchFilterBinnedPairingMassDistribution_redshift_powerlaw_mag_iid_spin_magnitude_gaussian_tilt_iid_spin_orientation_result.hdf5 CBC samples: fullpop4.h5