| Titel | Observations of the Sunyaev-Zel'dovich Effect towards Clusters of Galaxies with the APEX Telescope |
| Autor | Martin Nord |
| Publikationsform | Dissertation |
| Abstract | Results of 150 GHz continuum observations of several X-ray bright clusters of galaxies in the Sunyaev-Zel'dovich (SZ) effect, carried out using the APEX-SZ bolometer array on the APEX telescope, are presented. Follow-up observations of the cluster A2163 with the Large APEX Bolometer Camera (LABOCA) at 345 GHz on the same telescope have been carried out, yielding the largest map of a cluster of galaxies in the SZ increment to date. Details of possible contaminants affecting the SZ signal are outlined, and a simulated galaxy cluster survey is used to estimate levels of contamination from each source of emission. Radio point sources are found to be of possible concern, but more information on spectral slopes in the millimeter regime is needed before any decisive conclusions can be made. It is found that treating unresolved thermal sources as a source of excess noise yields an excellent approximation of this contaminant, which sets a fundamental confusion limit on single-frequency SZ measurements. more... |
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pdf-Dokument (8,5 MB!) |
| In Teilen | Inhaltsverzeichnis Teil 1. Kapitel 1 - 4, Seiten 1 - 44 (1,5 MB) Teil 2. Kapitel 5, Seiten 45 - 58 (5 MB) Teil 3. Kapitel 6 - 10, Seiten 59 - 138 (2,5 MB) |