2 citations · 5 across the 7 of their papers we have counts for
7 papers
Absorption effects in the expanding Universe: spectral transmittance functions of the intergalactic medium for distant sources
Anguohao Yang, Bohdan Novosyadlyj, Bohdan Melekh +1
We construct two self-consistent analytic approximations to the neutral hydrogen fraction, , and the helium ionization fractions, , …
Global Signals of the First Molecules from the Dark Ages in the Presence of Primordial Magnetic Fields
Yurii Kulinich, Bohdan Novosyadlyj, Maksym Tsizh +1
We investigate how primordial magnetic fields (PMFs) affect the formation kinetics of the first molecules, H, HD, and HeH, as well as the populations of rovibrational level…
Ukrainian Wartime Astronomy and its Prospects
Danilo Albergaria, Kateryna Frantseva, Pedro Russo +20
The Russian invasion of Ukraine damaged or compromised astronomical facilities and has prompted the displacement of researchers. A plan to restore Ukrainian astronomy, rooted in a…
Sensitivity of the redshifted 21 cm signal from the Dark Ages to parameters of primordial magnetic fields
Bohdan Novosyadlyj, Yurii Kulinich, Nazar Fortuna +1
We analyse the impact of the decaying magnetic turbulence of primordial magnetic fields (PMFs) and ambipolar diffusion on the ionisation and thermal history of the Dark Ages Univer…
Distortion of the CMB spectrum by the first molecules of the Dark Ages
Yurii Kulinich, Bohdan Novosyadlyj
The formation of first stars and galaxies at the Cosmic Dawn had been preceded by the chain of primordial chemistry reactions during Dark Ages which generated first molecules, most…
Impact of the cosmological expansion on spectral energy density of radiation in the intergalactic medium and once more about Olbers' paradox
Anguohao Yang, Bohdan Novosyadlyj, Gennadi Milinevsky
We analyse the impact of the expansion of the Universe on the formation of the total spectral energy density of radiation in the intergalactic medium. Assuming the same proper ther…
Space number density of bright quasars in the halo model of galaxy formation
Yu. Kulinich, B. Novosyadlyj
We analyse the redshift dependence of space number density of quasars assuming that they are the short-lived active stages of the massive galaxies and arise immediately after the c…