COSMOLOGICAL CONSTRAINTS FROM SUNYAEV-ZEL'DOVICH-SELECTED CLUSTERS WITH X-RAY OBSERVATIONS IN THE FIRST 178 deg<SUP>2</SUP> OF THE SOUTH POLE TELESCOPE SURVEY

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dc.contributor.authorBenson, B. A.
dc.contributor.authorde Haan, T.
dc.contributor.authorDudley, J. P.
dc.contributor.authorReichardt, C. L.
dc.contributor.authorAird, K. A.
dc.contributor.authorAndersson, K.
dc.contributor.authorArmstrong, R.
dc.contributor.authorAshby, M. L. N.
dc.contributor.authorBautz, M.
dc.contributor.authorBayliss, M.
dc.contributor.authorBazin, G.
dc.contributor.authorBleem, L. E.
dc.contributor.authorBrodwin, M.
dc.contributor.authorCarlstrom, J. E.
dc.contributor.authorChang, C. L.
dc.contributor.authorCho, H. M.
dc.contributor.authorClocchiatti, A.
dc.contributor.authorCrawford, T. M.
dc.contributor.authorCrites, A. T.
dc.contributor.authorDesai, S.
dc.contributor.authorDobbs, M. A.
dc.contributor.authorFoley, R. J.
dc.contributor.authorForman, W. R.
dc.contributor.authorGeorge, E. M.
dc.contributor.authorGladders, M. D.
dc.contributor.authorGonzalez, A. H.
dc.contributor.authorHalverson, N. W.
dc.contributor.authorHarrington, N.
dc.contributor.authorHigh, F. W.
dc.contributor.authorHolder, G. P.
dc.contributor.authorHolzapfel, W. L.
dc.contributor.authorHoover, S.
dc.contributor.authorHrubes, J. D.
dc.contributor.authorJones, C.
dc.contributor.authorJoy, M.
dc.contributor.authorKeisler, R.
dc.contributor.authorKnox, L.
dc.contributor.authorLee, A. T.
dc.contributor.authorLeitch, E. M.
dc.contributor.authorLiu, J.
dc.contributor.authorLueker, M.
dc.contributor.authorLuong-Van, D.
dc.contributor.authorMantz, A.
dc.contributor.authorMarrone, D. P.
dc.contributor.authorMcDonald, M.
dc.contributor.authorMcMahon, J. J.
dc.contributor.authorMehl, J.
dc.contributor.authorMeyer, S. S.
dc.contributor.authorMocanu, L.
dc.contributor.authorMohr, J. J.
dc.contributor.authorMontroy, T. E.
dc.contributor.authorMurray, S. S.
dc.contributor.authorNatoli, T.
dc.contributor.authorPadin, S.
dc.contributor.authorPlagge, T.
dc.contributor.authorPryke, C.
dc.contributor.authorRest, A.
dc.contributor.authorRuel, J.
dc.contributor.authorRuhl, J. E.
dc.contributor.authorSaliwanchik, B. R.
dc.contributor.authorSaro, A.
dc.contributor.authorSayre, J. T.
dc.contributor.authorSchaffer, K. K.
dc.contributor.authorShaw, L.
dc.contributor.authorShirokoff, E.
dc.contributor.authorSong, J.
dc.contributor.authorSpieler, H. G.
dc.contributor.authorStalder, B.
dc.contributor.authorStaniszewski, Z.
dc.contributor.authorStark, A. A.
dc.contributor.authorStory, K.
dc.contributor.authorStubbs, C. W.
dc.contributor.authorSuhada, R.
dc.contributor.authorvan Engelen, A.
dc.contributor.authorVanderlinde, K.
dc.contributor.authorVieira, J. D.
dc.contributor.authorVikhlinin, A.
dc.contributor.authorWilliamson, R.
dc.contributor.authorZahn, O.
dc.contributor.authorZenteno, A.
dc.date.accessioned2025-01-24T00:05:22Z
dc.date.available2025-01-24T00:05:22Z
dc.date.issued2013
dc.description.abstractWe usemeasurements from the South Pole Telescope (SPT) Sunyaev-Zel'dovich (SZ) cluster survey in combination with X-ray measurements to constrain cosmological parameters. We present a statistical method that fits for the scaling relations of the SZ and X-ray cluster observables with mass while jointly fitting for cosmology. The method is generalizable to multiple cluster observables, and self-consistently accounts for the effects of the cluster selection and uncertainties in cluster mass calibration on the derived cosmological constraints. We apply this method to a data set consisting of an SZ-selected catalog of 18 galaxy clusters at z > 0.3 from the first 178 deg(2) of the 2500 deg(2) SPT-SZ survey, with 14 clusters having X-ray observations from either Chandra or XMM-Newton. Assuming a spatially flat Lambda CDM cosmological model, we find the SPT cluster sample constrains sigma(8)(Omega(m)/0.25)(0.30) = 0.785 +/- 0.037. In combination with measurements of the cosmic microwave background (CMB) power spectrum from the SPT and the seven-year Wilkinson Microwave Anisotropy Probe data, the SPT cluster sample constrains sigma(8) = 0.795 +/- 0.016 and Omega(m) = 0.255 +/- 0.016, a factor of 1.5 improvement on each parameter over the CMB data alone. We consider several extensions beyond the Lambda CDM model by including the following as free parameters: the dark energy equation of state (w), the sum of the neutrino masses (Sigma m(nu)), the effective number of relativistic species (N-eff), and a primordial non-Gaussianity (f(NL)). We find that adding the SPT cluster data significantly improves the constraints on w and Sigma m(nu) beyond those found when using measurements of the CMB, supernovae, baryon acoustic oscillations, and the Hubble constant. Considering each extension independently, we best constrain w = -0.973 +/- 0.063 and the sum of neutrino masses Sigma m(nu) < 0.28 eV at 95% confidence, a factor of 1.25 and 1.4 improvement, respectively, over the constraints without clusters. Assuming a Lambda CDM model with a free N-eff and Sigma m(nu), we measure N-eff = 3.91 +/- 0.42 and constrain Sigma m(nu) < 0.63 eV at 95% confidence. We also use the SPT cluster sample to constrain f(NL) = -220 +/- 317, consistent with zero primordial non-Gaussianity. Finally, we discuss the current systematic limitations due to the cluster mass calibration, and future improvements for the recently completed 2500 deg(2) SPT-SZ survey. The survey has detected similar to 500 clusters with a median redshift of similar to 0.5 and a median mass of similar to 2.3 x 10(14) M-circle dot h(-1) and, when combined with an improved cluster mass calibration and existing external cosmological data sets will significantly improve constraints on w.
dc.fuente.origenWOS
dc.identifier.doi10.1088/0004-637X/763/2/147
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.1088/0004-637X/763/2/147
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101839
dc.identifier.wosidWOS:000313869800078
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectcosmic background radiation
dc.subjectcosmology: observations
dc.subjectgalaxies: clusters: general
dc.subjectlarge-scale structure of universe
dc.titleCOSMOLOGICAL CONSTRAINTS FROM SUNYAEV-ZEL'DOVICH-SELECTED CLUSTERS WITH X-RAY OBSERVATIONS IN THE FIRST 178 deg<SUP>2</SUP> OF THE SOUTH POLE TELESCOPE SURVEY
dc.typeartículo
dc.volumen763
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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