The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modi ed gravity

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dc.contributor.authorMueller, Eva-Maria
dc.contributor.authorPercival, Will
dc.contributor.authorLinder, Eric
dc.contributor.authorAlam, Shadab
dc.contributor.authorZhao, Gong-Bo
dc.contributor.authorSanchez, Ariel G.
dc.contributor.authorBeutler, Florian
dc.date.accessioned2017-08-24T10:46:13Z
dc.date.available2017-08-24T10:46:13Z
dc.date.issued2016-12-02
dc.description.abstractWe use baryon acoustic oscillation and redshift space distortion from the completed Baryon Oscillation Spectroscopic Survey, corresponding to data release 12 of the Sloan Digital Sky Survey, combined sample analysis in combination with cosmic microwave background, supernova and redshift space distortion measurements from additional spectroscopic surveys to test deviations from general relativity. We present constraints on several phenomenological models of modi ed gravity: First, we parametrise the growth of structure using the growth index, nding = 0:566 0:058 (68% C.L.). Second, we modify the relation of the two Newtonian potentials by introducing two additional parameters, GM and GL. In this approach, GM refers to modi cations of the growth of structure whereas GL to modi cation of the lensing potential. We consider a power law to model the redshift dependency of GM and GL as well as binning in redshift space, introducing four additional degrees of freedom, GM(z < 0:5), GM(z > 0:5), GL(z < 0:5), GL(z > 0:5). At 68% C.L. we measure GM = 0:980 0:096 and GL = 1:082 0:060 for a linear model, GM = 1:01 0:36 and GL = 1:31 0:19 for a cubic model as well as GM(z < 0:5) = 1:26 0:32, GM(z > 0:5) = 0:986 0:022, GL(z < 0:5) = 1:067 0:058 and GL(z > 0:5) = 1:037 0:029. Thirdly, we investigate general scalar tensor theories of gravity, nding the model to be mostly unconstrained by current data. Assuming a one-parameter f(R) model we can constrain B0 < 7:7 10􀀀5 (95% C.L). For all models we considered we nd good agreement with general relativity.ru_RU
dc.identifier.citationMueller, Eva-Maria et al. (2016) The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modi ed gravity. International conference "ECL17: Exploring the Energetic Universe 2017", Nazarbayev University Energetic Cosmic Laboratoryru_RU
dc.identifier.urihttps://arxiv.org/abs/1612.00812
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/2548
dc.language.isoenru_RU
dc.publisherInternational conference "ECL17: Exploring the Energetic Universe 2017", Nazarbayev University Energetic Cosmic Laboratoryru_RU
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectgravitationru_RU
dc.subjectcosmologyru_RU
dc.subjectlarge scale structure of the universeru_RU
dc.subjectdark energyru_RU
dc.subjectcosmological parametersru_RU
dc.subjectResearch Subject Categories::NATURAL SCIENCES::Physics::Astronomy and astrophysics::Cosmology
dc.titleThe clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modi ed gravityru_RU
dc.typeArticleru_RU

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