Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978afz....14..145n&link_type=abstract
Astrofizika, vol. 14, Feb. 1978, p. 145-160. In Russian.
Astronomy and Astrophysics
Astronomy
1
Astronomical Models, Black Holes (Astronomy), Hydrogen Recombinations, Reaction Kinetics, Atomic Energy Levels, Compton Effect, Density Distribution, Galactic Evolution, Green'S Functions, High Energy Electrons, Kinetic Equations, Photon Density, Relativistic Particles, Universe
Scientific paper
Distortion of hydrogen-recombination dynamics due to quantum evaporation of primordial black holes (PBHs) with masses of 10 to the (12th to 14th) power g is investigated in the framework of a standard 'hot' model for the evolution of the universe. Spectra of the particle pairs emitted by the PBHs are obtained along with upper limits to the PBH abundance and the maximum permissible amplitude of initial density fluctuations. The spectra determined for the proton, electron, and gamma-ray components of the PBH radiation are used to calculate the contribution of each component to the degree of ionization during the recombination era. A qualitative picture of the resulting distortion of hydrogen-recombination dynamics is briefly outlined.
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