Inflationary Primordial Black Holes as All Dark Matter

Following a new microlensing constraint on primordial black holes (PBHs) with ∼1020–1028 g [H. Niikura et al., arXiv:1701.02151.], we revisit the idea of PBH as all dark matter (DM). We have shown that the updated observational constraints suggest the viable mass function for PBHs as all DM to have a peak at ≃1020 g with a small width σ≲0.1, by imposing observational constraints on an extended mass function in a proper way. We have also provided an inflation model that successfully generates PBHs as all DM fulfilling this requirement.

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7 pages, 3 figures

black hole: primordial
curvature: perturbation
inflation: model
dark matter: density

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Figures(3)

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