60 citations · 180 across the 11 of their papers we have counts for
11 papers
Improved Radiative Transfer Corrections in Helium Emission Lines
Oleg Kurichin, Alexandre Ivanchik
We present a new detailed model of the He I collisional-recombination spectrum based on the most up-to-date atomic data. The model accounts for radiative transfer effects and the i…
Low-Energy Neutrinos from Primordial Black Holes: A New Possibility for Observing Hawking Radiation
Yu. A. Lysyy, P. A. Kislitsyn, A. V. Ivanchik
The study of primordial black holes (PBHs) and the Hawking radiation they produce represents a significant step toward understanding the role of these phenomena in the cosmological…
Neutrino at different epochs of the Friedmann Universe
A. V. Ivanchik, O. A. Kurichin, V. Yu. Yurchenko
Nowadays, at least two relics of the Big Bang have survived - the cosmological microwave background (CMB) and the cosmological neutrino background (CB). Being the second most ab…
Spectral features of non-equilibrium antineutrinos of primordial nucleosynthesis
Vlad Yu. Yurchenko, Alexandre V. Ivanchik
During the era of primordial nucleosynthesis the background of non-equilibrium antineutrinos is being formed due to decays of neutrons and nuclei of tritium. The spectra of antineu…
Relic neutrinos: Antineutrinos of Primordial Nucleosynthesis
Alexandre V. Ivanchik, Vlad Yu. Yurchenko
For the first time the antineutrino spectrum formed as a result of neutron and tritium decays during the epoch of primordial nucleosynthesis is calculated. This spectrum is a non-t…
Advanced Three Level Approximation for Numerical Treatment of Cosmological Recombination
Evgeny E. Kholupenko, Alexandre V. Ivanchik, Sergey A. Balashev +1
New public numerical code for fast calculations of the cosmological recombination of primordial hydrogen-helium plasma is presented. The code is based on the three-level approximat…