Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant

Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant

We discuss the predictions of Starobinsky model of f (R)-gravity with vanishing cosmological constant at the scales, typical for galaxies and galaxy clusters. We show that at current observational accuracy there is no significant difference in cut-off radius values for Starobinsky model and general...

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Main Authors: Alexeyev Stanislav, Latosh Boris, Echeistov Vsevolod
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201715805009
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spelling doaj-dfcdda9b2f164f738b9dfbe2d6d1f6e92021-08-02T03:50:57ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011580500910.1051/epjconf/201715805009epjconf_qfthep2017_05009Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological ConstantAlexeyev StanislavLatosh BorisEcheistov VsevolodWe discuss the predictions of Starobinsky model of f (R)-gravity with vanishing cosmological constant at the scales, typical for galaxies and galaxy clusters. We show that at current observational accuracy there is no significant difference in cut-off radius values for Starobinsky model and general relativity. This occurs from the masses of galaxies (from 109MS un), till galaxy clusters ones (till 1018MS un). In addition we demonstrate that cut-off radius value dependence against Starobinsky model parameter n increases during increasing n for all mass range. Despite the fact that some models provide the cut-off radius value less than in general relativity no any model comes outside the existing observational accuracy frames.https://doi.org/10.1051/epjconf/201715805009
collection DOAJ
language English
format Article
sources DOAJ
author Alexeyev Stanislav
Latosh Boris
Echeistov Vsevolod
spellingShingle Alexeyev Stanislav
Latosh Boris
Echeistov Vsevolod
Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant
EPJ Web of Conferences
author_facet Alexeyev Stanislav
Latosh Boris
Echeistov Vsevolod
author_sort Alexeyev Stanislav
title Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant
title_short Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant
title_full Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant
title_fullStr Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant
title_full_unstemmed Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant
title_sort astronomical tests for extended gravity: possible constraints on f(r) with vanishing cosmological constant
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2017-01-01
description We discuss the predictions of Starobinsky model of f (R)-gravity with vanishing cosmological constant at the scales, typical for galaxies and galaxy clusters. We show that at current observational accuracy there is no significant difference in cut-off radius values for Starobinsky model and general relativity. This occurs from the masses of galaxies (from 109MS un), till galaxy clusters ones (till 1018MS un). In addition we demonstrate that cut-off radius value dependence against Starobinsky model parameter n increases during increasing n for all mass range. Despite the fact that some models provide the cut-off radius value less than in general relativity no any model comes outside the existing observational accuracy frames.
url https://doi.org/10.1051/epjconf/201715805009
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AT latoshboris astronomicaltestsforextendedgravitypossibleconstraintsonfrwithvanishingcosmologicalconstant
AT echeistovvsevolod astronomicaltestsforextendedgravitypossibleconstraintsonfrwithvanishingcosmologicalconstant
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