Bayesian three-dimensional analysis of the σ_RM and ⟨ RM ⟩ as a function of the distance from the cluster center. Top right panel: image of the posterior distribution of the model parameters along with one-dimensional marginalizations. Top left panel: dots represent the observed σ_RM profile as a function of the distance from the cluster center while the fan plot represents the population of synthetic σ_RM profile extracted from the posterior distribution of model parameters. Bottom left panel: dots represent the observed ⟨ RM ⟩ profile as a function of the distance from the cluster center while the fan plot represents the population of synthetic ⟨ RM ⟩ profile extracted from the posterior distribution of model parameters. The Galactic foreground of 8.7 rad/m² (Oppermann et al. 2015) is indicated with a dashed line. Bottom right panel: trend of the mean magnetic field with the distance from the cluster center.