Journal article
Multi-frequency imaging of the galaxy cluster Abell 2163 using the sunyaev-Zel'dovich effect
M Nord, K Basu, F Pacaud, PAR Ade, AN Bender, BA Benson, F Bertoldi, HM Cho, G Chon, J Clarke, M Dobbs, D Ferrusca, NW Halverson, WL Holzapfel, C Horellou, D Johansson, J Kennedy, Z Kermish, R Kneissl, T Lanting Show all
Astronomy and Astrophysics | Published : 2009
Abstract
Context. Observations of the Sunyaev-Zel'dovich effect (SZE) from galaxy clusters are emerging as a powerful tool in cosmology. Besides large cluster surveys, resolved SZE images of individual clusters can shed light on the physics of the intra-cluster medium (ICM) and allow accurate measurements of the cluster gas and total masses. Aims.We used the APEX-SZ and LABOCA bolometer cameras on the APEX telescope to map both the decrement of the SZE at 150 GHz and the increment at 345 GHz toward the rich and X-ray luminous galaxy cluster Abell 2163 at redshift 0.203. The SZE images were used, in conjunction with archival XMM-Newton X-ray data, to model the radial density and temperature distributi..
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Funding Acknowledgements
We thank the APEX staff. for their unfailing support during the APEX-SZ and LABOCA observations. We thank Wilhelm Altenhoff for fruitful discussions on the calibration of the millimeter data, and Fred Schuller for helping with the LABOCA data taking. This work has been partially supported by the DFG Priority Program 1177. M. N. acknowledges support for this research through a stipend from the International Max Planck Research School (IMPRS) for Radio and Infrared Astronomy at the Universities of Bonn and Cologne. F. P. acknowledges support from the DfG Transregio Programme TR33. N. W. H. acknowedges support from an Alfred P. Sloan Research Fellowship. APEX is a collaboration between the Max-Planck-Institut fur Radioastronomie, the European Southern Observatory, and the Onsala Space Observatory. APEX-SZ is funded by the National Science Foundation under Grant No. AST-0138348. XMM-Newton is an ESA science mission with instruments and contributions directly funded by ESA Member States and the USA (NASA). The XMM-Newton project is supported in Germany by the Bundesministerium fur Wirtschaft und Technologie/Deutsches Zentrum fur Luft-und Raumfahrt (BMWI/DLR, FKZ 50 OX 0001), the Max-Planck Society and the Heidenhain-Stiftung.