Normalised intensity maps for synchrotron emission: each panel is divided into four segments–the left hemisphere is for radio emission at 1.4-GHz in the upper half and at 14-GHz in the lower half. The right hemisphere is for the 0.3-keV and 3-keV X-ray intensity in the upper half and lower half, respectively. For each segment, the intensity, F/F_m, is normalised to its peak value, F_m.