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GWTC-4.0: Population Properties of Merging Compact Binaries
A. G. Abac et al 2026 The Astrophysical Journal Letters 1005 .
Caption: Figure 17.
Distribution of GAUSSIAN COMPONENT SPINS hyperparameters for the primary BH (blue) and secondary BH (red) when neither magnitudes nor tilts are assumed identical (last row of Table 12), compared to when they are both assumed identical (gray, first row of Table 12). The contours of the two-dimensional distributions mark the 50th and 90th percentiles.
© 2026. The Author(s). Published by the American Astronomical Society.