Observations of the Sunyaev-Zel'dovich effect towards clusters of galaxies with the APEX telescope [Elektronische Ressource] / vorgelegt von Martin Nord

Observations of the Sunyaev-Zel’dovichEffect towards Clusters of Galaxieswith the APEX TelescopeDissertationzurErlangung des Doktorgrades (Dr. rer. nat.)derMathematisch-Naturwissenschaftlichen Fakult¨atderRheinischen Friedrich-Wilhelms-Universit¨at Bonnvorgelegt vonMartin NordausHelsingborg, SchwedenBonn, 2009Angefertigt mit Genehmigungder Mathematisch-Naturwissenschaftlichen Fakult¨atder Rheinischen Friedrich-Wilhelms-Universita¨t Bonn1. Gutachter: Prof. Dr. Frank Bertoldi2. Gutachter: Prof. Dr. Karl MentenTag der Mu¨ndlichen Pru¨fung: 21. August 2009Erscheinungsjahr: 2009AbstractResults of 150 GHz continuum observations of several X-ray bright clusters of galaxies inthe Sunyaev-Zel’dovich (SZ) effect, carried out using the APEX-SZ bolometer array on theAPEX telescope, are presented. Follow-up observations of the cluster A2163 with the LargeAPEX Bolometer Camera (LABOCA) at 345 GHz on the same telescope have been carriedout, yielding the largest map of a cluster of galaxies in the SZ increment to date.DetailsofpossiblecontaminantsaffectingtheSZsignalareoutlined,andasimulatedgalaxycluster survey is used to estimate levels of contamination from each source of emission. Inagreement with previous studies it is found that primary CMB anisotropies are a weak sourceof contamination for SZ observations of distant clusters, although massive nearby clusters canbe severely contaminated.