The 2-point Correlation Function of Galaxy Number Counts

Diplôme Thèse The 2-point Correlation Function of Galaxy Number Counts eng 2021-09-07 2021-09-07 author Jelic-Cizmek Goran 835841 director Durrer Ruth 0000-0001-9833-2086 106998 207 10.13097/archive-ouverte/unige:156387 urn:nbn:ch:unige-1563877 Sc. 5587 This thesis investigates two important subjects in cosmology: the 2-point functions of the galaxy number counts, and the vorticity field of matter. In the first four chapters, we make a general treatment of the galaxy number counts, and discuss contributions to it using perturbation theory. These results are then used to construct the fully relativistic correlation function, which is valid beyond the flat-sky approximation. A publicly available code is provided for a fast and accurate numerical evaluation of the 2-point function and its multipoles, which allows us to make accurate and precise predictions on cosmological parameters from future and planned experiments. Lastly, we study the mechanism responsible for the fact that galaxies rotate, the vorticity field of matter, using numerical methods. Cosmology Galaxy surveys Number counts Vorticity Correlation function Large-scale structure Perturbation theory Dewey 500.2 37 Département de physique théorique 133 false 20d8f8d2-8a7a-4cd4-8f8c-21a528ecbc26 Thesis Public these_goran_jelic-cizmek.pdf 22224697 application/pdf openAccess Faculté des sciences / Section de physique / Département de physique théorique

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The 2-point Correlation Function of Galaxy Number Counts				2021	456	310

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Jelic-Cizmek, Goran