Relativistic effects in galaxy clustering

Diplôme Thèse Relativistic effects in galaxy clustering eng 2015-09-11 author Montanari Francesco 706380 director Durrer Ruth 0000-0001-9833-2086 106998 10.13097/archive-ouverte/unige:75513 urn:nbn:ch:unige-755131 Sc. 4820 This thesis investigates new cosmological information that can be obtained from present and future large-scale galaxy surveys, in order to constrain our theory of gravity. We introduce directly observable cosmological probes and discuss model independent measurements, useful to put complementary constraints on cosmological parameters. We compute, through cosmological perturbation theory, fully relativistic expressions describing the galaxy distribution in the Universe. All relevant observational effects are included, and a code is provided for fast and accurate numerical evaluations. We forecast the capability of future experiments to constrain sub-leading terms contributing to the galaxy spectrum and bi-spectrum. New promising probes are associated in particular with the weak lensing effect on galaxy statistical distributions, which represents an alternative constraint on the lensing potential, therefore on our gravity theory. Cosmology Large Scale Structures General Relativity Dewey 500.2 37 Département de physique théorique 133 false 795 Groupe Durrer f6c93407-959d-4954-a211-8b63eea3fe2d Thesis Public Montanari_Thesis_v3.pdf 13221372 application/pdf openAccess Faculté des sciences / Section de physique / Département de physique théorique

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Montanari, Francesco