Mathematics – Logic
Scientific paper
Feb 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phdt.........3h&link_type=abstract
Ph.D. Thesis (University of Bonn), 176 pages.
Mathematics
Logic
Weak Gravitational Lensing, Cosmic Shear, Cosmology
Scientific paper
Cosmic shear analyses are independent of any assumptions on the relation between dark and luminous matter. Hence constraints on cosmological parameters are unbiased. In this thesis we perform a cosmic shear analysis of 15 square degree high-quality R-band data of the Garching-Bonn Deep Survey (GaBoDS) obtained with the Wide-Field-Imager (WFI) at the ESO/MPG 2.2m telescope. The GaBoDS comprises 1.75 square degree of UBVRI-band observations of the Deep Public Survey (DPS). We utilise this multi-colour data set to estimate a photometric redshift distribution of a sample of lensing galaxies in the magnitude interval [21.5,24.5]. Combining the cosmic shear signal with the photometric redshift distribution we determine constraints for the total matter density and the mass power spectrum normalisation. The thesis comprises a thorough introduction to the standard model of cosmology and weak lensing. Wedescribe in detail the data reduction process and catalogue creation. In the final chapter we present the cosmic shear analysis of the GaBoDS.
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