Speaker
Description
Weak gravitational lensing has emerged as a competitive cosmological probe, and it is often combined with galaxy clustering to provide constrains on the matter density and matter fluctuations of the Universe. In this talk, I will present the cosmological analysis of data from the Kilo Degree Survey (KiDS), where we combine statistical measurements from galaxy shapes and galaxy positions using the latest, full-survey data release. Building on the published cosmic shear cosmological results, I will focus on details of the galaxy position sample selection. In particular, I will present the magnitude-limited KiDS Bright sample, but also introduce the methodology for measuring galaxy clustering using the full-depth, cosmic shear sample. In addition, I will present methodological advances such as supplementing the data with stellar mass function measurements and using the halo model for modelling observables, as well as including spectroscopic data in a standard 3x2 analysis, increasing cosmological information and robustness through self-calibration.
| Other topic / keywords: | weak gravitational lensing, galaxy clustering, galaxy surveys |
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