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Title:
Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters
Authors:
AMI Consortium; Hurley-Walker, Natasha; Bridle, Sarah; Cypriano, Eduardo S.; Davies, Matthew L.; Erben, Thomas; Feroz, Farhan; Franzen, Thomas M. O.; Grainge, Keith; Hobson, Michael P.; Lasenby, Anthony; Marshall, P. J.; Olamaie, Malak; Pooley, Guy; Rodríguez-Gonzálvez, Carmen; Saunders, Richard D. E.; Scaife, Anna M. M.; Schammel, Michel P.; Scott, Paul F.; Shimwell, Timothy; Titterington, David; Waldram, Elizabeth; Zwart, Jonathan T. L.
Affiliation:
AA(), AB(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE; International Centre for Radio Astronomy Research, Curtin Institute of Radio Astronomy, 1 Turner Avenue, Technology Park, Bentley, WA 6845, Australia), AC(Department of Physics and Astronomy, University College London, London WC1E 6BT), AD(Departamento de Astronomia, Instituto de Astronomia Geofìsica e Ciências Atmosfèricas, Universidade de São Paulo, Rua do Matão 1226, 05508-900 São Paulo, Brazil), AE(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AF(Argelander-Institut für Astronomie Auf dem Hügel 71, D-53121, Bonn, Germany), AG(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AH(CSIRO Astronomy & Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia), AI(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE; Kavli Institute for Cosmology Cambridge, Madingley Road, Cambridge CB3 0HA), AJ(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AK(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE; Kavli Institute for Cosmology Cambridge, Madingley Road, Cambridge CB3 0HA), AL(Oxford Astrophysics, Department of Physics, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH), AM(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AN(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AO(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AP(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE; Kavli Institute for Cosmology Cambridge, Madingley Road, Cambridge CB3 0HA), AQ(Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland), AR(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AS(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AT(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AU(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AV(Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE), AW(Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027, USA)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 419, Issue 4, pp. 2921-2942. (MNRAS Homepage)
Publication Date:
02/2012
Origin:
WILEY
Astronomy Keywords:
gravitational lensing: weak, radiation mechanisms: non-thermal, cosmic background radiation, cosmology: observations, galaxies: clusters: general
Abstract Copyright:
© 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS
DOI:
10.1111/j.1365-2966.2011.19937.x
Bibliographic Code:
2012MNRAS.419.2921A

Abstract

We present an analysis of observations made with the Arcminute Microkelvin Imager (AMI) and the Canada-France-Hawaii Telescope (CFHT) of six galaxy clusters in a redshift range of 0.16-0.41. The cluster gas is modelled using the Sunyaev-Zel'dovich (SZ) data provided by AMI, while the total mass is modelled using the lensing data from the CFHT. In this paper, we (i) find very good agreement between SZ measurements (assuming large-scale virialization and a gas-fraction prior) and lensing measurements of the total cluster masses out to r200; (ii) perform the first multiple-component weak-lensing analysis of A115; (iii) confirm the unusual separation between the gas and mass components in A1914 and (iv) jointly analyse the SZ and lensing data for the relaxed cluster A611, confirming our use of a simulation-derived mass-temperature relation for parametrizing measurements of the SZ effect. We request that any reference to this paper cites 'AMI Consortium: Hurley-Walker et al. 2011'.
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