Best-fit models for the jet morphology of M87* as obtained from the most recent GMVA observations at 86 GHz (J. Y. Kim et al. 2018) (bottom-right panel). The left and middle columns refer to data that is azimuthally and time averaged over the interval 13,000–15,000, M, for a BH with dimensionless spin a_⋆ = 0.9375. The top-left panel refers to the best-fit phenomenological model for the electron temperature, Θ_e = Θ_e(R_low, R_high, β), corresponding to R_low = 1 and R_high = 160, and a κ-distribution from a current sheet with parameters ϵ = 0.5, σ_cut = 3.0, r_inj = 10 M. The bottom-left panel shows instead the best-fit model using the self-consistent electron temperature, Θ_e = Θ_e(σ, β), and a κ-distribution derived from a turbulent scenario. In this case, with ϵ = 1.0, σ_cut = 3, r_inj = 10 M. The middle column displays the GRRT synthetic image convolved with a GMVA-like beam of 116 μas × 307 μas, to mimic the observational resolution.