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

DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES

A. D. Chernin, G. S. Bisnovatyi-Kogan

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.


Ключові слова


---

Повний текст:

PDF (English)

Посилання


Antonov V.A., Chernin A.D.: 1975, Sov. Astron. Lett., 1, No 3, 121.

Baryshev Yu.V., Chernin A.D., Teerikorpi P.: 2001, A&A, 378, 729.

Bisnovatyi G.S., Chernin A.D.: 2012, Ap&SS, 338, 337.

Bisnovatyi-Kogan G.S., Zeldovich Ya.B.: 1969, Astrohysics, 5, 105.

Bisnovatyi-Kogan G.S., Merafiva M., Tarasov S.O.:2011, In preparation.

Byrd G.G., Chernin A.D. and Valtonen M.J.: 2007,Cosmology: Foundations and Frontiers, Moscow, URSS.

Chernin A.D.: 2001, Physics-Uspekhi, 44, 1099.

Chernin A.D.: 2008, Physics-Uspekhi, 51, 267.

Chernin A.D., Teerikorpi P., Baryshev Yu.V.: 2000,

[astro-ph/0012021] Adv. Space Res., 31, 459, 2003.

Chernin A.D., Teerikorpi P., Baryshev Yu.V.: 2006, A&A, 456, 13.

Chernin A.D., Karachentsev I.D., Valtonen M.J. et al.: 2009, A&A, 507, 1271.

Chernin A.D., Karachentsev I.D., Nasonova O.G. et al.: 2010, A&A, 520, A104.

Ekholm T. et al.: 1999, A&A, 351, 827.

Ekholm T. et al.: 2000, A&A, 355, 835.

Karachentsev I.D., Kashibadze O.G., Makarov D.I. et al.: 2009, MNRAS, 393, 1265.

Karachentsev I.D., Nasonova O.G.: 2009, MNRAS, 405, 1975.

Kofman L.A., Starobinskii A.A.: 1985, Sov. Astron. Lett., 11, 271.

Teerikorpi P. et al.: 1992, A&A, 260, 17.

Teerikorpi P., Chernin A.D., Karachentsev I.D. et al.: 2008, A&A, 483, 383.

Teerikorpi P., Chernin A.D.: 2010, A&A, 516, 93.




Copyright (c) 2012 Odessa Astronomical Publications

Creative Commons License
Ця робота ліцензована Creative Commons Attribution-NonCommercial 4.0 International License.