Mass bias evolution in tSZ cluster cosmology

Understand

Galaxy clusters observed through the thermal Sunyaev-Zeldovich (tSZ) effect are a recent cosmological probe.

• The precision on the cosmological constraints is affected mainly by the current knowledge of cluster physics, which enters the analysis through the scaling relations.
• Here we aim to study one of the most important sources of systematic uncertainties, the mass bias, $b$.
• We have analysed the effects of a mass-redshift dependence, adopting a power-law parametrisation.