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Constraints on Primordial Black Holes: the Importance of Accretion

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arxiv 2003.12589 v2 pith:7EWSVFMA submitted 2020-03-27 astro-ph.CO gr-qchep-ph

Constraints on Primordial Black Holes: the Importance of Accretion

classification astro-ph.CO gr-qchep-ph
keywords accretionblackconstraintsholesprimordialmassmassesaccount
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider the constraints on the fraction of dark matter in the universe in the form of primordial black holes taking into account the crucial role of accretion which may change both their mass and mass function. We show that accretion may drastically weaken the constraints at the present epoch for primordial black holes with masses larger than a few solar masses.

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Cited by 7 Pith papers

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

  1. Microscopic primordial black holes as macroscopic dark matter from large extra dimensions

    astro-ph.CO 2026-04 unverdicted novelty 7.0

    In the ADD extra-dimension model, microscopic primordial black holes undergo runaway accretion and grow to macroscopic scales, allowing them to comprise all dark matter with initial abundances as low as 10^{-44}.

  2. Reconstruction of Primordial Power Spectrum from Gravitational Waves of High-Redshift Black Hole Binaries

    astro-ph.CO 2026-07 conditional novelty 6.0

    Gradient-descent inversion of redshifted BBH mass distributions recovers the PBH mass function and, via regularized Press-Schechter, a candidate O(10^{-2}) bump in the small-scale primordial power spectrum.

  3. Effect of post-recombination accretion on primordial binary black hole mergers within virialized dark matter halos

    astro-ph.CO 2026-07 conditional novelty 6.0

    BHL-type post-recombination accretion can raise late three-body PBH merger rates enough for TianQin detections at f~10^{-6} and for LVK limits to bound delayed virialization.

  4. GW231123: A Possible Primordial Black Hole Origin

    astro-ph.CO 2025-08 conditional novelty 6.0

    GW231123's masses and high spins are consistent with primordial black holes that accreted mass and angular momentum in the early universe within the standard PBH framework.

  5. $\tt BlackHawk$ $\tt v3.0$: Hawking Radiation from Regular Black Holes

    gr-qc 2026-06 unverdicted novelty 5.0

    BlackHawk v3.0 adds Hawking temperatures and greybody factors for multiple regular black hole metrics to an existing public code via numerical routines.

  6. 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.

  7. 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.