Primordial Black Holes as Dark Matter: The Power Spectrum and Evaporation of Early Structures
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 104 solar mass. We also find that structures with less than ~ 103 primordial black holes evaporate by now.
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