Image Details
GWTC-4.0: Population Properties of Merging Compact Binaries
A. G. Abac et al 2026 The Astrophysical Journal Letters 1005 .
Caption: Figure 19.
Marginal and joint χeff and χp distributions under the GAUSSIAN EFFECTIVE SPINS model using two methods of cutting out hyperparameter samples that may lead to an unconverged likelihood (see Figure 18). The marginal distributions show the median (solid line) and 90% credible interval on the probability density for each population distribution (shaded). The joint distribution is the PPD with contours marking the 50th and 90th quantiles.
© 2026. The Author(s). Published by the American Astronomical Society.