Magnetic fields in the Shapley Supercluster core with POSSUM: Challenging model predictions

Open Access

Table B.2.

Impact on the inherent uncertainties that a statistical analysis from an RM grid has when increasing the density of the grid.

ρ_RM = RMs/deg²	36	100	200	500
${(Δ σ / σ)}_{RM}^{Bridge}$ $(\Delta\sigma/\sigma)^{\mathrm{Bridge}}_{\mathrm{RM}}$	37%	21%	15%	9%
${(Δ σ / σ)}_{RM}^{Clusters}$ $(\Delta\sigma/\sigma)^{\mathrm{Clusters}}_{\mathrm{RM}}$	25%	15%	10%	6%

Notes. The first column (with 36/deg²) corresponds to the current ASKAP-POSSUM observations used in this work. The second column (with 100/deg²) would correspond to the expectations from the SKA (Heald et al. 2020). The relative errors are the mean of all MiRò models used in our analysis.

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