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Doctoral thesis
Open access
English

The 2-point Correlation Function of Galaxy Number Counts

DirectorsDurrer, Ruthorcid
Number of pages207
Imprimatur date2021-09-07
Defense date2021-09-07
Abstract

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.

eng
Keywords
  • Cosmology
  • Galaxy surveys
  • Number counts
  • Vorticity
  • Correlation function
  • Large-scale structure
  • Perturbation theory
Citation (ISO format)
JELIC-CIZMEK, Goran. The 2-point Correlation Function of Galaxy Number Counts. 2021. doi: 10.13097/archive-ouverte/unige:156387
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Technical informations

Creation10/27/2021 2:09:00 PM
First validation10/27/2021 2:09:00 PM
Update time08/15/2023 11:16:30 AM
Status update08/15/2023 11:16:30 AM
Last indexation01/29/2024 10:57:37 PM
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