5 papers
Samuil Kaplan and the development of astrophysical research at the Lviv University (dedicated to the 100th anniversary of his birth)
Bohdan Novosyadlyj, Bohdan Hnatyk, Yurij Kulinich +6
Samuil Kaplan (1921-1978) was a productive and famous astrophysicist. He was affiliated with a number of scientific centers in different cities of former Soviet Union. The earliest…
Impact of dynamical dark energy on the neutron star equilibrium
S. Smerechynskyi, M. Tsizh, B. Novosyadlyj
We study the density distribution of the minimally-coupled scalar field dark energy inside a neutron star. The dark energy is considered in the hydrodynamical representation as a p…
Large-scale structures in the CDM Universe: network analysis and machine learning
Maksym Tsizh, Bohdan Novosyadlyj, Yurij Holovatch +1
We perform an analysis of the Cosmic Web as a complex network, which is built on a CDM cosmological simulation. For each of nodes, which are in this case dark matter halos forme…
White dwarfs as a probe of dark energy
Sviatoslav Smerechynskyi, Maksym Tsizh, Bohdan Novosyadlyj
We investigate the radial density distribution of the dynamical dark energy inside the white dwarfs (WDs) and its possible impact on their intrinsic structure. The minimally-couple…
Dynamics of minimally coupled dark energy in spherical halos of dark matter
Bohdan Novosyadlyj, Maksym Tsizh, Yurij Kulinich
We analyse the evolution of scalar field dark energy in the spherical halos of dark matter at the late stages of formation of gravitationally bound systems in the expanding Univers…