Constraints on the Number Density of Evaporating Primordial Black Holes for the Chromospheric Evaporation Models

D. V. Smirnov; E. V. Bugaev; P. A. Klimai; V. B. Petkov

arxiv: 0803.2313 · v1 · submitted 2008-03-15 · 🌌 astro-ph

Constraints on the Number Density of Evaporating Primordial Black Holes for the Chromospheric Evaporation Models

V. B. Petkov , E. V. Bugaev , P. A. Klimai , D. V. Smirnov This is my paper

classification 🌌 astro-ph

keywords blackchromosphericconstraintscosmic-raydensityevaporatingevaporationholes

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Cosmic gamma-ray bursts with primary-photon energies > 10 GeV are sought in the data from the Andyrchy array obtained in the mode of detection of a single cosmic-ray component during a net observation period of 2005.4 d. The distribution of fluctuations of the detector counting rate agrees with the expected cosmic-ray background, the only exception being an event with a deviation of 7.9 sigma. Constraints on the number density of evaporating primordial black holes in a local region of the Galaxy are obtained for the chromospheric evaporation models.

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Constraints on Primordial Black Holes
astro-ph.CO 2020-02 accept novelty 4.0

Updated compilation shows PBHs are tightly constrained across 55 orders of magnitude in mass, ruling out dominant dark matter contributions except in narrow windows, with many limits carrying observational uncertainties.