52 citations · 82 across the 4 of their papers we have counts for
4 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…
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…
Determination of HII region metallicity in the context of estimating the primordial helium abundance
O. A. Kurichin, P. A. Kislitsyn, A. V. Ivanchik
The primordial He abundance (Y) is one of the key characteristics of Primordial Nucleosynthesis processes that occurred in the first minutes after the Big Bang. Its value d…
A new determination of the primordial helium abundance using the analyses of HII region spectra from SDSS
O. A. Kurichin, P. A. Kislitsyn, V. V. Klimenko +2
The precision measurement of the primordial helium abundance is a powerful probe of the early Universe. The most common way to determine is analyses of observations of…