Synchrotron and inverse-Compton fluxes for t = 8  ×  10⁷ yr. The mean magnetic field value B for the south lobe and the γ-ray excess region in the north lobe is 0.91   μG and 1.17   μG, respectively. The dot-dashed line refers to the IC contribution due to EBL upscattering. The dashed line a) shows the result for t = 10⁸ yr. The possible γ-ray flux expected from pp-interactions for a thermal gas density n = 10^-4   cm^-3 are also shown (dotted line).