Constraints on the dark-matter density profile of Eridanus 2 in the computational (left) and astrophysical (right) parametrizations, assuming FDM, found using CJAM and MultiNest. Units are omitted for clarity. The parameters are the dark-matter density of the CDM-like outer profile at 100 pc (ρ_CDM, 100), the logarithmic slope of the CDM-like outer profile at 100 pc (α_CDM, 100), the soliton radius (r_sol) in kpc, the scale radius (r_s) of the CDM-like outer profile in kpc, the ratio of the dark-matter density at the transition between inner and outer profiles over the central soliton density (ε), the characteristic dark-matter density of the CDM-like outer profile (ρ_CDM, 0) in M_⊙, kpc⁻³, the central dark-matter density of the soliton (ρ_sol, 0) in M_⊙ kpc⁻³, and the systemic velocity (v₀) in km s⁻¹. The contours correspond to 0.5σ, 1.0σ, 1.5σ, and 2.0σ confidence levels, where σ is the standard deviation of a two-dimensional normal distribution. The vertical dashed lines in the one-dimensional histograms indicate the median and the 68% confidence interval (without arrows) or the 68% and 95% confidence limits (upper and lower arrows, respectively).