The VIMOS Public Extragalactic Redshift Survey (VIPERS). The growth of structure at 0.5 < z < 1.2 from redshift-space distortions in the clustering of the PDR-2 final sample

Journal
Date Issued
2017
Author(s)
Pezzotta, A.
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Bel, J.
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Granett, B. R.
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Guzzo, L.
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Peacock, J. A.
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Adami, C.
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Davidzon, I.
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Fritz, A.
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Krywult, J.
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Le Brun, V.
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Le Fèvre, O.
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Maccagni, D.
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Małek, K.
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Marulli, F.
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Pollo, A.
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Tasca, L. A. M.
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Tojeiro, R.
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Arnouts, S.
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Coupon, J.
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Koda, J.
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Ilbert, O.
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Mohammad, F.
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Moutard, T.
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Moscardini, L.
DOI
Abstract
We present measurements of the growth rate of cosmological structure from the modelling of the anisotropic galaxy clustering measured in the final data release of the VIPERS survey. The analysis is carried out in configuration space and based on measurements of the first two even multipole moments of the anisotropic galaxy auto-correlation function, in two redshift bins spanning the range 0.5 θθ and Pδθ that appear in RSD models. These tests show that we are able to measure the growth rate with negligible bias down to separations of 5 h-1 Mpc. Interestingly, the application to real data shows a weaker sensitivity to the details of non-linear RSD corrections compared to mock results. We obtain consistent values for the growth rate times the matter power spectrum normalisation parameter of fσ8 = 0.55 ± 0.12 and 0.40 ± 0.11 at effective redshifts of z = 0.6 and z = 0.86 respectively. These results are in agreement with standard cosmology predictions assuming Einstein gravity in a ΛCDM background.

Based on observations collected at the European Southern Observatory, Cerro Paranal, Chile, using the Very Large Telescope under programs 182.A-0886 and partly 070.A-9007. Also based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the Canada-France-Hawaii Telescope (CFHT), which is operated by the National Research Council (NRC) of Canada, the Institut National des Sciences de l'Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. This work is based in part on data products produced at TERAPIX and the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS. The VIPERS web site is http://www.vipers.inaf.it/

Volume
604
Start page
A33
Uri
Url
Issn Identifier
0004-6361
Ads BibCode
2017A&A...604A..33P
Rights
open.access
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