Cosmology with galaxy clusters: impact of theoretical and observational systematic uncertainties

TL;DR

This paper examines how systematic uncertainties in modeling galaxy cluster properties affect cosmological constraints, emphasizing the need for improved calibration of the mass-observable relation in mm-wave surveys.

Contribution

It introduces a new analysis of Planck-detected clusters, highlighting the importance of better modeling and calibration of the mass-observable relation for accurate cosmology.

Findings

Systematic uncertainties significantly impact cosmological constraints.

Improved calibration of the mass-observable relation is essential.

Analysis of Planck clusters underscores calibration needs.

Abstract

In this talk I focus on how the modelling of the mass-observable relation and the halo mass function can impact the accuracy and precision of cosmological constraints inferred from galaxy clusters. I present a new analysis of clusters detected in mm wavelengths by the Planck satellite, highlighting the need of an improved description and calibration for the mass-observable relation.