40 citations · 76 across the 10 of their papers we have counts for
10 papers
Formation of the first halos, galaxies and magnetic fields
M. Demiański, A. Doroshkevich, T. Larchenkova
Cosmic objects with magnetic fields (quasars, radiogalaxies) are observed at redshifts (Wang et al., 2021, Fan et al., 2023, Yang et al., 2024) and more (for instance, fo…
The patch like model of galaxies formation: the virial paradox, core-cusp and missing satellite problems
M. Demiański, A. Doroshkevich
The patch like model of the hierarchical galaxy formation in the CDM cosmological model with small damping scale is considered. In this model galaxies and clusters of galaxies a…
Self similarity of the dark matter dominated objects and the shape of small scale power spectrum
M. Demiański, A. Doroshkevich
We analyzed available observational data of a sample of dark matter (DM) dominated galaxies and clusters of galaxies and we have found correlations between the virial mass, $M_{vir…
Beyond the standard CDM cosmology: the observed structure of DM halos and the shape of the power spectrum
M. Demiański, A. G. Doroshkevich
Recent advances in observational astronomy allow to study various groups of Dark Matter (DM) dominated objects from the dwarf spheroidal (dSph) galaxies to clusters of galaxies tha…
Semi analytical description of formation of galaxies and clusters of galaxies
Marek Demiański, Andrey Doroshkevich
We apply the well known semi analytical model of formation of DM halos to discuss the process of formation and evolution of the relaxed objects dominated by the DM component (such…
Statistical characteristics of the observed metal systems and problems of reionization
M. Demiański, A. G. Doroshkevich
We analyze basic properties of about 200 metal systems observed in high resolution spectra of 9 quasars by Boksenberg, Sargent & Rauch (2003). The measured Doppler parameters for t…
Possible extensions of the standard cosmological model: anisotropy, rotation, and magnetic field
M. Demiański, A. G. Doroshkevich
We show that the difference between the theoretically expected and measured by WMAP amplitude of the quadrupole fluctuations of CMB can be related to the impact of the anisotropic…
Observational estimates of the initial power spectrum at small scale from Lyman- absorbers
M. Demiański, A. G. Doroshkevich
We present a new method of measuring the power spectrum of initial perturbations to an unprecedently small scale of 10 kpc. We apply this method to a sample of 4500…
Statistical characteristics of observed Ly- forest and the shape of initial power spectrum
M. Demiański, A. Doroshkevich, V. Turchaninov
Properties of 5000 observed Ly- absorbers are investigated using the model of formation and evolution of DM structure elements based on the Zel'dovich theory. This model…
Statistical characteristics of simulated walls
M. Demianski, A. G. Doroshkevich, V. Mueller +1
The large scale matter distribution in three different simulations of CDM models is investigated and compared with corresponding results of the Zel'dovich theory of nonlinear gravi…