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Unraveling the origin of black holes from effective spin measurements with LIGO-Virgo

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arxiv 1905.13019 v2 pith:GKKDF54G submitted 2019-05-23 astro-ph.HE astro-ph.COgr-qchep-ph

Unraveling the origin of black holes from effective spin measurements with LIGO-Virgo

classification astro-ph.HE astro-ph.COgr-qchep-ph
keywords blackholesspincalculateeffectiveligo-virgoalignmentdifferent
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We investigate how to use information on the effective spin parameter of binary black hole mergers from the LIGO-Virgo gravitational wave detections to discriminate the origin of the merging black holes. We calculate the expected probability distribution function for the effective spin parameter for primordial black holes. Using LIGO-Virgo observations, we then calculate odds ratios for different models for the distribution of black holes' spin magnitude and alignment. We evaluate the posterior probability density for a possible mixture of astrophysical and primordial black holes as emerging from current data, and calculate the number of future merger events needed to discriminate different spin and alignment models at a given level of statistical significance.

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Cited by 2 Pith papers

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

  1. Primordial Black Holes: A Review of Formation and Evolution

    gr-qc 2026-06 unverdicted novelty 3.0

    Review of PBH formation via compaction function and relativistic thresholds in FLRW backgrounds, arguing that memory burden and curvature corrections halt evaporation to leave Planck-scale relics.

  2. Primordial Black Holes as Dark Matter: Recent Developments

    astro-ph.CO 2020-06 unverdicted novelty 3.0

    Primordial black holes in specific mass ranges could account for some or all dark matter while resolving structure-formation and seed problems in standard cosmology.