Synchrotron and inverse-Compton fluxes for t = 10⁷ yr. The radio data for the south lobe are from Hardcastle et al. (2009) (sum of region 4 and region 5 in their Table 1), while the radio data for the north region are from the WMAP analysis in this paper. The mean magnetic field value B used for the north and the south lobe is 0.39   μG and 0.43   μG, respectively. The dot-dashed line refers to the IC contribution due to EBL upscattering.