Impact of relativistic effects on galaxy clustering future measurements

Galaxy clustering measurements are one of the main targets for future cosmological surveys. Such surveys will probe large cosmological volumes, which will require the inclusion of relativistic effects in order to provide a robust and reliable theoretical prediction. In this thesis we investigate the corrections induced by relativistic effects for a variety of planned future surveys, and how neglecting them could bias parameter estimations. Finally, we study modern formalisms for modeling galaxy correlations which naturally include projection and relativistic effects and therefore provide an optimal way to obtain the best constraints for future surveys.