Left: structure of the magnetic field B in units of μG at 1600 years of a test run with n₀ = 0.04 cm^-3. The rest of the model parameters are shown in the text. Middle: TeV image derived from the 2D MHD simulation. The image has been normalized to its peak value. Right: comparison of the observed radial profile averaged along the azimuthal direction with results (solid line) derived from the 2D MHD simulation. The dotted line is obtained by averaging the radial brightness profiles obtained in the position angle range of 0.7π to 0.95π in the middle panel.