Image Details
GWTC-4.0: Population Properties of Merging Compact Binaries
A. G. Abac et al 2026 The Astrophysical Journal Letters 1005 .
Caption: Figure 3.
Differential merger rate as a function of primary mass (evaluated at z = 0.2) of the BROKEN POWER LAW + 2 PEAKS model (orange) and B-SPLINE model (blue) compared to the POWER LAW + PEAK model from GWTC-3.0 (R. Abbott et al. 2023a). The solid lines indicate the posterior medians and the shaded regions show the 90% credible interval of each model. Comparing these results, it is clear that a single power law is a poor description of the the low-mass end of the spectrum.
© 2026. The Author(s). Published by the American Astronomical Society.