Total intensity ℐ and circular polarization 𝒱 comparison between the fiducial hot spot model presented in Fig. 3 and the observations. A static source with a total intensity of ℐ_sha = 2.4 Jy and a circular polarization of 𝒱_sha = −0.025 Jy, representing the contribution from the observable black hole shadow, was added to the model. For circular polarization, we show the results corresponding to two opposite magnetic field orientations (red continuous and dashed lines).