Primordial black hole numbers: standard formulas and charts

2024/08/17 by Eemeli Tomberg, Tomberg, Eemeli · 1 citation
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Mathematical and Theoretical Analysis #Relativity and Gravitational Theory

paper · pdf · doi:10.48550/arxiv.2408.09303

openalex publication_date 2024/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This brief note presents standard computations of primordial black hole mass M given perturbations of scale k, and their late-time abundance Ω_PBH given their initial density fraction β. I recap the assumptions made in these computations and present formulas and reference charts useful for a working cosmologist.

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