Searching for Very-High-Energy Gamma-Ray Bursts from Evaporating Primordial Black Holes
V.B. Petkov, E.V. Bugaev, P.A. Klimai, M.V. Andreev, V.I. Volchenko,, G.V. Volchenko, A.N. Gaponenko, Zh.Sh. Guliev, I.M. Dzaparova, D.V. Smirnov,, A.V. Sergeev, A.B. Chernyaev, A.F. Yanin
TL;DR
This paper models the characteristics of gamma-ray bursts from evaporating primordial black holes and describes a search technique, leading to an upper limit on their local number density based on observational data.
Contribution
It introduces a method for detecting high-energy gamma-ray bursts from primordial black holes and provides new observational constraints on their local abundance.
Findings
Upper limit on primordial black hole density in local space
Analysis of burst time profiles and array dead time effects
Comparison with previous experimental results
Abstract
Temporal and energy characteristics of the very-high-energy gamma-ray bursts from evaporating primordial black holes have been calculated by assuming that the photospheric and chromospheric effects are negligible. The technique of searching for such bursts on shower arrays is described. We show that the burst time profile and the array dead time should be taken into account to interpret experimental data. Based on data from the Andyrchy array of the Baksan Neutrino Observatory (Institute for Nuclear Research, Russian Academy of Sciences), we have obtained an upper limit on the number density of evaporating primordial black holes in a local region of space with a scale size of ~10^{-3} pc. Comparison with the results of previous experiments is made.
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