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Primordial Black Holes as Dark Matter: The Power Spectrum and Evaporation of Early Structures

N. Afshordi·P. McDonald·D. N. Spergel
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Abstract

We consider the possibility that massive primordial black holes are the dominant form of dark matter. Black hole formation generates entropy fluctuations that adds a Poisson noise to the matter power spectrum. We use Lyman-alpha forest observations to constrain this Poisson term in matter power spectrum, then we constrain the mass of black holes to be less than few times 10^4 solar mass. We also find that structures with less than ~ 10^3 primordial black holes evaporate by now.

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N. Afshordi, P. McDonald, D. N. Spergel. 2003-02-03. Primordial Black Holes as Dark Matter: The Power Spectrum and Evaporation of Early Structures. https://doi.org/10.1086/378763

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