J/MNRAS/452/1171ivo://CDS.VizieR/J/MNRAS/452/1171doi:10.26093/cds/vizier.74521171CDSWilcox H.Bacon D.Nichol R.C.Rooney P.J.Terukina A.Romer A.K.,Koyama K.Zhao G.-B.Hood R.Mann R.G.Hilton M.Manolopoulou M.,Sahlen M.Collins C.A.Liddle A.R.Mayers J.A.Mehrtens N.,Miller C.J.Stott J.P.Viana P.T.P.2024-08-15T20:14:06Z2016-04-01T15:41:16ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frx-ray-sourcesredshiftedThe chameleon gravity model postulates the existence of a scalar field that couples with matter to mediate a fifth force. If it exists, this fifth force would influence the hot X-ray emitting gas filling the potential wells of galaxy clusters. However, it would not influence the clusters weak lensing signal. Therefore, by comparing X-ray and weak lensing profiles, one can place upper limits on the strength of a fifth force. This technique has been attempted before using a single, nearby cluster (Coma, z=0.02). Here we apply the technique to the stacked profiles of 58 clusters at higher redshifts (0.1<z<1.2), including 12 new to the literature, using X-ray data from the XMM Cluster Survey and weak lensing data from the Canada-France-Hawaii-Telescope Lensing Survey. Using a multiparameter Markov chain Monte Carlo analysis, we constrain the two chameleon gravity parameters ({beta} and {phi}_{inf}_). Our fits are consistent with general relativity, not requiring a fifth force. In the special case of f_R_ gravity (where {beta}=sqrt(1/6)), we set an upper limit on the background field amplitude today of |f_R0_|<6x10^-5^ (95 percent CL). This is one of the strongest constraints to date on |f_R0_| on cosmological scales. We hope to improve this constraint in future by extending the study to hundreds of clusters using data from the Dark Energy Survey.2015MNRAS.452.1171Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/452/1171CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/423/1024 : XCS-DR1 Cluster Catalogue (Mehrtens+, 2012)J/MNRAS/424/2086 : LX-T relation in galaxy clusters (Hilton+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/452/1171https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/452/1171http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/452/1171https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/452/1171https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/452/1171http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/452/1171GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/452/1171/tableb1 (the extended X-ray sources in CFHTLenS footprint)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/452/1171/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/452/1171/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/452/1171/tableb1?GETtext/xml+votable180.050000true30.190833-6.7081110.0055555555555555565/4419 4422 6/11424 11434 11436 17503 17525 17674 17681-17684 17686-17687 17692-17694 17696-17697 17699 17701-17703 17712-17714 36771 36775 36777 36782 36792 36798https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/452/1171?format=asciiX-rayOpticaldefaultJ/MNRAS/452/1171/tableb1the extended X-ray sources in CFHTLenS footprintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXMMXCSXMMXCS name (JHHMMSS.s+DDMMSS.s)meta.id;meta.maincharz? Redshift, when availablesrc.redshiftfloatnullableFlag[0-3] Flag (1)meta.code.errorcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from Name (right ascension part)degpos.eq.ra;meta.main_DEPosition from Name (declination part)degpos.eq.dec;meta.main