On-sky projection of the simulated velocity field and flux density distribution of C7 with the Lorentz factor γ = 10 and jet viewing angle θ = 8° in the case of (a) radial velocity filed (left panels) and (b) twisted velocity field (right panels). Radial and twisted velocity fields are the same as in Fig. 22. Median position of the scatter of C7 is marked by plus sign. Curved dotted lines represent the contour lines of the flux densities and thick dotted straight line denotes the symmetry axis of the scatter. Projection of the jet axis is shown by dashed line.