Open Access
Table A.1.
Summary of parameters in COMPACTNESS PEAKS population model.
| Parameter | Description | Prior | |
|---|---|---|---|
| fpeaks | Fraction of BHs in the Gaussian components of the m1 distribution. | U(0, 1) | |
| f1 | Fraction of BHs in the lower-mass Gaussian component of the Gaussian components of the m1 distribution. | U(0, 1) | |
| α | Spectral index for the power-law of the m1 distribution. | U(-4, 8) | |
| mminPL [M⊙] | Minimum mass of the power-law component of the m1 distribution. | U(2, 10) | |
| mmaxPL [M⊙] | Maximum mass of the power-law component of the m1 distribution. | U(60, 100) | |
| βPL | Spectral index for the power-law of the q distribution paired with the power law component of the m1 distribution. | U(-4, 12) | |
| μBHL [M⊙] | Mean of the lower-mass Gaussian component in the m1 distribution. | U(8, 12) | |
| σBHL [M⊙] | Width of the lower-mass Gaussian component in the m1 distribution. | U(1,4) | |
| mminBHL [M⊙] | Minimum mass of the lower-mass Gaussian component of the m1 distribution. | U(5, 8) | |
| mmaxBHL [M⊙] | Maximum mass of the lower-mass Gaussian component of the m1 distribution. | U(10, 15) | |
| βBHL | Spectral index for the power-law of the q distribution paired with the power law component of the m1 distribution. | U(-4, 12) | |
| μBHH [M⊙] | Mean of the upper-mass Gaussian component in the m1 distribution. | U(12, 50) | |
| σBHH [M⊙] | Width of the upper-mass Gaussian component in the m1 distribution. | U(4, 20) | |
| mminBHH [M⊙] | Minimum mass of the upper-mass Gaussian component of the m1 distribution. | U(10, 25) | |
| mmaxBHH [M⊙] | Maximum mass of the upper-mass Gaussian component of the m1 distribution. | U(30, 50) | |
| βBHH | Spectral index for the power-law of the q distribution paired with the upper-mass Gaussian component of the m1 distribution. | U(-4, 12) | |
| μχX | Mean of the spin magnitude distribution for a given component. | U(0, 1) | |
| σχX | Width of the spin magnitude distribution for a given component | U(0.1, 2) | |
| σtX | Width of the spin orientation distribution for the subpopulation aligned with respect to the orbital angular momentum for a given component | U(0.1, 4) | |
| ζX | Fraction of BBHs in the subpopulation aligned with respect to the orbital angular momentum for a given component | U(0, 1) | |
Notes. The prior ranges are motivated by the results in Schneider et al. (2023)
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