Перегляд за Автор "Brilenkov, R. D."

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    Документ
    Different approaches for dark matter halos of clusters of galaxies
    (Astroprint, 2014) Brilenkov, R. D.; Eingorn, Maxim V.; Zhuk, Oleksandr I.
    To describe the density profile of dark matter halos of clusters of galaxies, we compare the approach based on the Schwarzschild-de Sitter metric with a recently developed mechanical one (discrete cosmology inside the cell of uniformity). In the first approach, the cosmological effects are completely incorporated into the cosmological constant, while in the second one the scale factor enters directly the corresponding equations. Hence, in the latter case we can take into account the effect on the density profiles not only the cosmological constant, but also other material components. Thus, we can evaluate how this dynamic impact is considerable and testable.
  • Ескіз
    Документ
    Discrete cosmology application concerning dark matter halos
    (Одеський національний університет імені І. І. Мечникова, 2015) Brilenkov, R. D.
    We applied discrete cosmology for investigation of the density profiles of dark matter (DM) halos of clusters of galaxies. Comparing the derived velocity dispersion with the experimental data for the Coma cluster, we found the effective radius for the mass distribution inside this galaxy cluster. Our estimates give an opportunity to restrict the parameters of the Navarro-Frenk-White profile for considered cluster.
  • Ескіз
    Документ
    SCHWARZSCHILD-DE SITTER AND MECHANICAL APPROACHES COMPARISON WITH RESPECT TO DARK MATTER HALOS
    (Astroprint, 2013) Brilenkov, R. D.; Eingorn, Maxim V.; Zhuk, Oleksandr I.
    We compare the Schwarzschild-de Sitter approach to deriving mass and potential distributions and corresponding parameters associated with dark matter halos for clusters of galaxies with the mechanical one, taking into account cosmological effects, in particular, dark energy influence.