DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES
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 a...
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Odessa I. I. Mechnykov National University
2012-11-01
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| Series: | Odessa Astronomical Publications |
| Online Access: | http://oap.onu.edu.ua/article/view/83323 |
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doaj-471f2b0c033b4ce8876666e003747a8d2020-11-25T02:32:48ZengOdessa I. I. Mechnykov National UniversityOdessa Astronomical Publications1810-42152012-11-01252939510.18524/1810-4215.2012.25.8332383323DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIESA. D. Chernin0G. S. Bisnovatyi-Kogan1Sternberg Astronomical Institute, Moscow University, Moscow, RussiaSpace Research Institute, Russian Academy of SciencesWe 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.http://oap.onu.edu.ua/article/view/83323 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
A. D. Chernin G. S. Bisnovatyi-Kogan |
| spellingShingle |
A. D. Chernin G. S. Bisnovatyi-Kogan DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES Odessa Astronomical Publications |
| author_facet |
A. D. Chernin G. S. Bisnovatyi-Kogan |
| author_sort |
A. D. Chernin |
| title |
DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES |
| title_short |
DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES |
| title_full |
DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES |
| title_fullStr |
DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES |
| title_full_unstemmed |
DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES |
| title_sort |
dark energy and key physical parameters of clusters of galaxies |
| publisher |
Odessa I. I. Mechnykov National University |
| series |
Odessa Astronomical Publications |
| issn |
1810-4215 |
| publishDate |
2012-11-01 |
| description |
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. |
| url |
http://oap.onu.edu.ua/article/view/83323 |
| work_keys_str_mv |
AT adchernin darkenergyandkeyphysicalparametersofclustersofgalaxies AT gsbisnovatyikogan darkenergyandkeyphysicalparametersofclustersofgalaxies |
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1724817621105246208 |