10 citations · 66 across the 15 of their papers we have counts for
15 papers
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…
Global signal in the redshifted hydrogen 21-cm line from the Dark Ages and Cosmic Dawn: Dependence on the nature of dark matter and modeling of first light
Bohdan Novosyadlyj, Yurii Kulinich, Danylo Koval
We estimate the global signal in the redshifted hyperfine structure line 21 cm of hydrogen atoms formed during the Dark Ages and Cosmic Dawn epochs. The evolution of the brightness…
Signal in the Hyperfine Structure Line of the Ground State of Atomic Hydrogen from the Dark Ages as a Cosmological Test
Bohdan Novosyadlyj, Yurii Kulinich, Olexandr Konovalenko
We analyze the formation of the signal in the 21 cm hydrogen line of the Dark Ages () in different cosmological models and discuss the possibility of its detection b…
The first molecules in the intergalactic medium and halos of the Dark Ages and Cosmic Dawn
Bohdan Novosyadlyj, Yuriy Kulinich, Bohdan Melekh +1
We study the formation and destruction of the first molecules at the epochs of the Dark Ages and Cosmic Dawn to evaluate the luminosity of the protogalaxy clumps (halos) in the mol…
Redshifted 21-cm emission signal from the halos in Dark Ages
B. Novosyadlyj, V. Shulga, Yu. Kulinich +1
The emission in the hyperfine structure 21 cm line of atomic hydrogen arising in the halos with masses M from the Dark Ages in the models with Warm Dark…
Thermal and Resonant Emission of Dark Ages Halos in the Rotational Lines of HeH
Yu. Kulinich, B. Novosyadlyj, V. Shulga +1
We analyse the thermal emission and resonant scattering of CMB radiation from the dark ages halos in the rotational lines of the helium hydride ion (HeH), one of the first ch…
Hydrogen Molecules in the Dark Ages Halos: Thermal Emission vs. Resonant Scattering
B. Novosyadlyj, V. Shulga, Yu. Kulinich +1
The emission from dark ages halos in the lines of transitions between lowest rotational levels of hydrogen and hydrogen deuteride molecules is analyzed. It is assumed molecules to…
Halos in Dark Ages: formation and chemistry
Bohdan Novosyadlyj, Valerii Shulga, Wei Han +2
Formation of halos in the Dark Ages from initial spherical perturbations is analyzed in a four component Universe (dark matter, dark energy, baryonic matter and radiation) in the a…
Distribution of dark energy in the vicinity of compact objects
M. Tsizh, B. Novosyadlyj, Yu. Kulinich
The distribution of dark energy density in the vicinity of compact static objects is analyzed. Dark energy is assumed to be in the form of a scalar field with three parameters: the…
Dynamics of dark energy in the gravitational fields of matter inhomogeneities
B. Novosyadlyj, Yu. Kulinich, M. Tsizh
We study the dynamical properties and space distribution of dark energy in the weak and strong gravitational fields caused by inhomogeneities of matter in the static world of galax…
Gravitational stability of dark energy in galaxies and clusters of galaxies
Bohdan Novosyadlyj, Maksym Tsizh, Yurij Kulinich
We analyze the behavior of the scalar field as dark energy of the Universe in a static world of galaxies and clusters of galaxies. We find the analytical solutions of evolution equ…
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…