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The XXL Survey: XXV...
The XXL Survey: XXV. Cosmological analysis of the C1 cluster number counts
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- Pacaud, F. (author)
- Universität Bonn,University of Bonn
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- Pierre, M. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Melin, J. B. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Adami, C. (author)
- Laboratoire d'Astrophysique de Marseille
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- Evrard, A. E. (author)
- University of Michigan
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- Galli, S. (author)
- Institut d 'Astrophysique de Paris
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- Gastaldello, F. (author)
- Istituto nazionale di astrofisica (INAF)
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- Maughan, B. (author)
- University of Bristol
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- Sereno, M. (author)
- Universita di Bologna,University of Bologna,Istituto nazionale di astrofisica (INAF)
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- Alis, S. (author)
- Istanbul Universitesi,Istanbul University
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- Altiéri, B. (author)
- European Space Astronomy Centre (ESAC)
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- Birkinshaw, M. (author)
- University of Bristol
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- Chiappetti, L. (author)
- Istituto nazionale di astrofisica (INAF)
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- Faccioli, L. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Giles, P. (author)
- University of Bristol
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- Horellou, Cathy, 1967 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Iovino, A. (author)
- Istituto nazionale di astrofisica (INAF)
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- Koulouridis, E. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Le Fevre, J. P. (author)
- Institut de Recherche sur les Lois Fondamentales de l'Univers
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- Lidman, C. (author)
- Australian National University
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- Lieu, M. (author)
- European Space Astronomy Centre (ESAC)
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- Maurogordato, S. (author)
- Université Nice Sophia Antipolis (UNS)
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- Moscardini, L. (author)
- Istituto nazionale di astrofisica (INAF),Istituto Nazionale di Fisica Nucleare,National Institute for Nuclear Physics,Universita di Bologna,University of Bologna
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- Plionis, M. (author)
- Aristotelio Panepistimio Thessalonikis,Aristotle University of Thessaloniki,National Observatory of Athens
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- Poggianti, B. M. (author)
- Istituto nazionale di astrofisica (INAF)
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- Pompei, E. (author)
- European Southern Observatory Santiago
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- Sadibekova, T. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Valtchanov, I. (author)
- European Space Astronomy Centre (ESAC)
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- Willis, J. (author)
- University of Victoria
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(creator_code:org_t)
- 2018-11-20
- 2018
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 620
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Abstract
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- Context. We present an estimation of cosmological parameters with clusters of galaxies. Aims. We constrain the Ωm, σ8, and w parameters from a stand-alone sample of X-ray clusters detected in the 50 deg2 XMM-XXL survey with a well-defined selection function. Methods. We analyse the redshift distribution of a sample comprising 178 high signal-to-noise ratio clusters out to a redshift of unity. The cluster sample scaling relations are determined in a self-consistent manner. Results. In a lambda cold dark matter (ΛCDM) model, the cosmology favoured by the XXL clusters compares well with results derived from the Planck Sunyaev-Zel'dovich clusters for a totally different sample (mass/redshift range, selection biases, and scaling relations). However, with this preliminary sample and current mass calibration uncertainty, we find no inconsistency with the Planck CMB cosmology. If we relax the w parameter, the Planck CMB uncertainties increase by a factor of ~10 and become comparable with those from XXL clusters. Combining the two probes allows us to put constraints on Ωm = 0.316 ± 0.060, σ8 = 0.814 ± 0.054, and w = -1.02 ± 0.20. Conclusions. This first self-consistent cosmological analysis of a sample of serendipitous XMM clusters already provides interesting insights into the constraining power of the XXL survey. Subsequent analysis will use a larger sample extending to lower confidence detections and include additional observable information, potentially improving posterior uncertainties by roughly a factor of 3.
Subject headings
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Matematik -- Sannolikhetsteori och statistik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Probability Theory and Statistics (hsv//eng)
Keyword
- Cosmological parameters
- Surveys
- X-rays: galaxies: clusters
- Galaxies: clusters: intracluster medium
- Large-scale structure of Universe
Publication and Content Type
- for (subject category)
- ref (subject category)
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- By the author/editor
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Pacaud, F.
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Pierre, M.
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Melin, J. B.
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Adami, C.
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Evrard, A. E.
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Galli, S.
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show more...
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Gastaldello, F.
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Maughan, B.
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Sereno, M.
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Alis, S.
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Altiéri, B.
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Birkinshaw, M.
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Chiappetti, L.
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Faccioli, L.
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Giles, P.
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Horellou, Cathy, ...
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Iovino, A.
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Koulouridis, E.
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Le Fevre, J. P.
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Lidman, C.
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Lieu, M.
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Maurogordato, S.
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Moscardini, L.
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Plionis, M.
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Poggianti, B. M.
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Pompei, E.
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Sadibekova, T.
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Valtchanov, I.
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Willis, J.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Analytical Chemi ...
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Mathematics
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and Probability Theo ...
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Astronomy and As ...
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Chalmers University of Technology