Exploring the High-redshift PBH-ΛCDM Universe: Early Black Hole Seeding, the First Stars and Cosmic Radiation Backgrounds

  title={Exploring the High-redshift PBH-$\Lambda$CDM Universe: Early Black Hole Seeding, the First Stars and Cosmic Radiation Backgrounds},
  author={Nico Cappelluti and G{\"u}nther Hasinger and Priyamvada Natarajan},
  journal={The Astrophysical Journal},
We explore the observational implications of a model in which primordial black holes (PBHs) with a broad birth mass function ranging in mass from a fraction of a solar mass to ∼106 M ⊙, consistent with current observational limits, constitute the dark matter (DM) component in the universe. The formation and evolution of dark matter and baryonic matter in this PBH-Λ cold dark matter (ΛCDM) universe are presented. In this picture, PBH-DM mini-halos collapse earlier than in standard ΛCDM, baryons… 
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Illuminating the dark ages: cosmic backgrounds from accretion onto primordial black hole dark matter
  • G. Hasinger
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2020
The recent interpretation of cold dark matter as the sum of contributions of different mass Primordial Black Hole (PBH) families [1] could explain a number of so far unsolved astrophysical mysteries.
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