Left: the peak synchrotron frequency, ν_p, at ﹩{R}_{\min }﹩ as a function of m and ﹩\dot{m}﹩. The white curves show contours at four different observing frequencies of interest, such that at any given frequency objects located to the lower right of the curve are expected to have optically thin emission. Right: the self-consistent value determined for T_e,0 as a function of m and ﹩\dot{m}﹩. In both panels, the approximate mass (6.5 × 10⁹ M_⊙) and accretion rate (λ = 10⁻⁵) corresponding to the SMBH in M87 is marked in black.