Published 2018
| Version v1
Journal article
The XXL Survey: XXV. Cosmological analysis of the C1 cluster number counts
Creators
- Pacaud, F.
- Pierre, M.
- Melin, J.B.
- Adami, C.
- Evrard, A.E.
- Galli, S.
- Gastaldello, F.
- Maughan, B.J.
- Sereno, M.
- Alis, S.
- Altieri, B.
- Birkinshaw, M.
- Chiappetti, L.
- Faccioli, L.
- Giles, P.A.
- Horellou, C.
- Iovino, A.
- Koulouridis, E.
- Le Fèvre, J.P.
- Lidman, C.
- Lieu, M.
- Maurogordato, S.
- Moscardini, L.
- Poggianti, B.M.
- Pompei, E.
- Sadibekova, T.
- Valtchanov, I.
- Willis, J.P.
Contributors
Others:
- Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Laboratoire d'Astrophysique de Marseille (LAM) ; Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
- Institut d'Astrophysique de Paris (IAP) ; Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
- Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
- Observatoire de la Côte d'Azur (OCA) ; Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- XXL
Description
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.Key words: surveys / X-rays: galaxies: clusters / galaxies: clusters: intracluster medium / large-scale structure of Universe / cosmological parameters★ Based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-01897257
- URN
- urn:oai:HAL:hal-01897257v1
Origin repository
- Origin repository
- UNICA