Searching for Constraints on Starobinsky’s Model with a Disappearing Cosmological Constant on Galaxy Cluster Scales


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Predictions of the f(R)-gravity model with a disappearing cosmological constant (Starobinsky’s model) on scales characteristic of galaxies and their clusters are considered. The absence of a difference in the mass dependence of the turnaround radius between Starobinsky’s model and General Relativity accessible to observation at the current accuracy of measurements has been established. This is true both for small masses (from 109MSun) corresponding to an individual galaxy and for masses corresponding to large galaxy clusters (up to 1015MSun). The turnaround radius increases with parameter n for all masses. Despite the fact that some models give a considerably smaller turnaround radius than does General Relativity, none of the models goes beyond the bounds specified by the observational data.

作者简介

S. Alexeyev

Sternberg Astronomical Institute

编辑信件的主要联系方式.
Email: alexeyev@sai.msu.ru
俄罗斯联邦, Universitetskii pr. 13, Moscow, 119992

B. Latosh

Bogoliubov Laboratory of Theoretical Physics; Dubna State University

Email: alexeyev@sai.msu.ru
俄罗斯联邦, Dubna, Moscow oblast, 141980; Dubna, Moscow oblast, 141980

V. Echeistov

Faculty of Physics

Email: alexeyev@sai.msu.ru
俄罗斯联邦, Moscow, 119991

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