Cosmologia i Formacio' d'Estructures

Details Cosmologia i Formacio' d'Estructures Cosmologia i Formacio' d'Estructures

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phdt.......317m&link_type=abstract

Ph D. Thesis, Facultat de Fisica. Departament de Fisica Fonamental. Universitat de Barcelona, June 2007, 220 pages

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In this thesis we push forward techniques to learn about the large scale structure formation of the universe. The approach is from theory, observations and simulations. From theory we study the growth of four non standard cosmological models: DGP model, Cardassian model, Chaplygin gas model and Coupled Quintessence model. From observations we look at the ISW effect by means of the cross-correlation between CMB maps and galaxy survey. From a compilation of data we contrain the cosmological parameters and give new evidence of dark energy. We also introduce a new method to compute errors in configuration space and compare it with other methods in the literature. This method takes into account the geometry of the suveys and it is shown to give accurate results at large angles. In this thesis we also use large dark matter simulations to study the clustering and the local halo bias model.

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