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Constraints on power spectrum of density fluctuations from PBH evaporations
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astro-ph
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bumpconstraintsdensityfluctuationsneutrinophotonpowerprimordial
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We calculate neutrino and photon energy spectra in extragalactic space from evaporation of primordial black holes, assuming that the power spectrum of primordial density fluctuations has a strong bump in the region of small scales. The constraints on the parameters of this bump based on neutrino and photon cosmic background data are obtained.
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