DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES

Автор(и)

  • A. D. Chernin Sternberg Astronomical Institute, Moscow University, Moscow, Russia, Російська Федерація
  • G. S. Bisnovatyi-Kogan Space Research Institute, Russian Academy of Sciences, Російська Федерація

DOI:

https://doi.org/10.18524/1810-4215.2012.25.83323

Ключові слова:

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Анотація

We discuss the physics of clusters of galaxies embedded in the cosmic dark energy background and show that 1) the halo cut-off radius of a cluster like the Virgo cluster is practically, if not exactly, equal to the zero-gravity radius at which the dark matter gravity is balanced by the dark energy antigravity; 2) the halo averaged density is equal to two densities of dark energy; 3) the halo edge (cut-off) density is the dark energy density with a numerical factor of the unity order slightly depending on the halo profile.

Посилання

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Опубліковано

2012-11-15

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