Cosmological studies with galaxy clusters at x-ray, optical and millimeter wavelengths

Grandis, Sebastian (2019): Cosmological studies with galaxy clusters at x-ray, optical and millimeter wavelengths. Dissertation, LMU München: Fakultät für Physik

Abstract

The number of halos as a function of mass and redshift is a powerful cosmological probe. The most massive halos are inhabited by clusters of galaxies, whose observational features scale with the host's halo mass and redshift with some scatter. These features allow us to select galaxy clusters in X-ray, optical and millimeter wavelength. We demonstrate in this thesis how to extract cosmological information from a cluster sample. The major limiting factors to this measurement are the uncertainty in the mapping between observable and mass, and the uncertainties in the modelling of the selection function. We demonstrate, introducing novel techniques and developing established ones, how to empirically calibrate these sources of systematic uncertainty. We furthermore demonstrate how to set up empirical validation tests for the cosmological inference from cluster samples.

• Dokumententyp: Dissertationen (Dissertation, LMU München)
• Themengebiete: 500 Naturwissenschaften und Mathematik ; 500 Naturwissenschaften und Mathematik > 530 Physik
• Fakultäten: Fakultät für Physik
• Sprache der Hochschulschrift: Englisch
• Datum der mündlichen Prüfung: 17. Dezember 2019
• 1. Bericht­erstatter:in: Mohr, Joseph