title: ÐÐµÐ¹ÑÑÐ¸Ð½Ð½ÑÐµ ÑÐ¿ÐµÐºÑÑÑ Ð¾Ñ Ð¸ÑÐ¿Ð°ÑÐµÐ½Ð¸Ñ Ð¿ÐµÑÐ²Ð¸ÑÐ½ÑÑ ÑÐµÑÐ½ÑÑ Ð´ÑÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Neutrino spectra from the evaporation of primordial black holes
Creators: name: ÐÑÑÑÐ¹, Ð®Ð»Ð¸Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð¿ÐµÑÐ²Ð¸ÑÐ½ÑÐµ ÑÐµÑÐ½ÑÐµ Ð´ÑÑÑ
Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ðµ Ð¥Ð¾ÐºÐ¸Ð½Ð³Ð°
Ð½ÐµÐ¹ÑÑÐ¸Ð½Ð¾
ÑÐ¿ÐµÐºÑÑ Ð¼Ð°ÑÑ
Ð»Ð¾Ð³Ð½Ð¾ÑÐ¼Ð°Ð»ÑÐ½Ð¾Ðµ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ
primordial black holes
Hawking radiation
neutrino
mass spectrum
log-normal distribution

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description: The subject of the graduate qualification work is "Neutrino spectra from the evaporation of primordial black holes". The given work is devoted to the study of the energy spectra of neutrinos, which are generated by primordial black holes (PBHs) due to the Hawking radiation. The aim of the work is to obtain differential spectra of neutrinos emitted by Schwarzschild PBHs using the publicly available program code BlackHawk in order to find energy ranges in which neutrino fluxes will have maximum values in the context of searching for observational confirmation of the existence of PBHs. The log-normal distribution function is used as the initial mass spectrum of PBHs in the Universe for modeling radiation. The results obtained take into account the redshift and the existing constraints from the evaporation of PBHs on the fraction of their abundance in the Universe. The desired spectra are modeled over a wide range of energies up to the Planck scaleÂ EPl â 1019Â GeV. The main result is that the contribution of neutrinos from PBHs in the high-energy region of the spectra (â« 1 MeV) will be significantly small in comparison with the observed spectrum of atmospheric neutrinos, while in the narrow range of low energies (10-2 â 102Â eV)Â neutrino fluxes under certain parameters can be comparable in order of magnitude with the theoretically predicted spectrum of thermal solar neutrinos. The results obtained can later be used to search for PBHs with new-generation neutrino telescopes.