Non-parametric estimation of the baryon gas fraction and the cosmological bias with clusters
From a model-independent expansion history reconstructed from supernovae, we infer with iterative smoothing how the hydrostatic mass bias of galaxy clusters depends on mass and redshift, using X-ray gas fractions. Reconciling clusters with CMB constraints requires this bias to evolve with time.
arXiv:2603.13763Galaxy clustersType Ia supernovaeIterative smoothingWith my students