activity
20052025
most citedTwo-Photon 2s<->1s Transitions during Recombination of Hydrogen in the Universe

60 citations · 180 across the 11 of their papers we have counts for

collaborators
Showing astro-ph.COShow all

5 papers · 1 filter

astro-ph.CO2025★ 1 cited

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…

astro-ph.CO2024★ 10 cited

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…

astro-ph.CO2018★ 8 cited

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…

astro-ph.CO2011★ 7 cited

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…

astro-ph.CO2009★ 13 cited

Effect of Radiative Feedbacks for Resonant Transitions during Cosmological Recombination

E. E Kholupenko, A. V. Ivanchik, D. A Varshalovich

The inhibition of the total HI transition rate by delayed resonant reabsorption of HI photons by HI line which is possible due to cosmolo…