Cosmological constraints from galaxy clusters, keeping baryons under control
Galaxy clusters are powerful probes of the cosmology in the recent universe. They can be observed through a large number of tracers. Recent results show that the cosmological parameters inferred from galaxy clusters and cosmic microwave background (CMB) are in tension.
This tension might indicates that an extension of the cosmological model is required or that our understanding of baryon physics inside galaxy clusters in unsufficient. In this seminar, I will present recent cosmological results derived using Sunyaev-Zel’dovich effect (tSZ), Xrays, and CMB weak lensing data. Then, I will present recent effort to calibrate the mass-observable relations of galaxy clusters that is a key element to understand the origin of the tension between galaxy clusters and CMB inferred cosmological parameters.