Primordial black holes as dark matter: The power spectrum and evaporation of early structures

N. Afshordi, P. McDonald, D. N. Spergel

Research output: Contribution to journalArticle

80 Scopus citations

Abstract

We consider the possibility that massive primordial black holes are the dominant form of dark matter. Black hole formation adds a Poisson noise to the matter density fluctuations. We use Lyα forest observations to constrain this Poisson term, which constrains the black hole masses to be less than approximately a few times 104 M. We also find that structures with less than ∼103 black holes evaporate by now.

Original languageEnglish (US)
Pages (from-to)L71-L74
JournalAstrophysical Journal
Volume594
Issue number2 II
DOIs
StatePublished - Sep 10 2003

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Black hole physics
  • Cosmology: observations
  • Cosmology: theory
  • Dark matter
  • Large-scale structure of universe
  • Quasars: absorption lines

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