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Bayesian analysis of the spin distribution of LIGO/Virgo black holes

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arxiv 2010.13811 v2 pith:LEU2OTIN submitted 2020-10-26 astro-ph.CO gr-qc

Juan Garcia-Bellido , Jose Francisco Nuño Siles , Ester Ruiz Morales This is my paper · ORCID
classification astro-ph.COgr-qc
keywords blackholesligovirgoevidencedistributionfirstisotropic
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Gravitational wave detection from binary black hole (BBH) inspirals has become routine thanks to the LIGO/Virgo interferometers. The nature of these back holes remains uncertain. We study here the spin distributions of LIGO/Virgo black holes from the first catalogue GWTC-1 and the first four published BBH events from run O3. We compute the Bayes evidence for several independent priors: flat, isotropic, spin-aligned and anti-aligned. We find strong evidence for low spins in all of the cases, and significant evidence for small isotropic spins versus any other distribution. When considered as a homogeneous population of black holes, these results give support to the idea that LIGO/Virgo BBH are primordial.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. An analytical joint prior for effective spins for inference on the spin distribution of binary black holes

    gr-qc 2024-12 conditional novelty 7.0 of 10

    An exact analytic expression is derived for the joint distribution of effective spins χeff and χp under isotropic uniform spin priors, and a GWTC-3 reanalysis shows the previous KDE approximation can shift log-likelih...

  2. Spin-up and mass-gain in hyperbolic encounters of spinning black holes

    gr-qc 2025-10 unverdicted novelty 6.0 of 10

    Scattering black holes gain spin and mass by absorbing emitted gravitational radiation, with spin-up up to 0.3 and mass gain up to 15% in near-threshold encounters.

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