Restrictions on Extended Gravity at Galaxy Clusters Scales
Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetsky Prospekt, 13, Moscow 119234, Russia
2 Department of Quantum Theory and High Energy Physics, Physics Faculty, Lomonosov Moscow State University, Vorobievi Gori, 2/1, Moscow 119234, Russia
3 Department of Theoretical Physics, Faculty of Natural and Engineering Science, Dubna International University, Universitetskaya Str., 19, Dubna, Russia
4 Department of Theoretical Physics, Faculty of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, United Kingdom
5 Department of Astrophysics and Stellar Astronomy, Physics Faculty, Lomonosov Moscow State University, Vorobievi Gori, 2/1, Moscow 119234, Russia
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Published online: 31 October 2018
Following  we discuss the predictions of Starobinsky model of f(R)-gravity with vanishing cosmological constant at galaxy and galaxy clusters scales. As a result we demonstrate that at the current observational accuracy level there is no significant difference in cut-off radius values for Starobinsky model and general relativity (GR) in the mass range from 109MS un till galaxy clusters ones (1018MS un) that shows the good applicability of GR at these ranges.
© The Authors, published by EDP Sciences, 2018
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