Extended Data Fig. 6: Comparison between the X-ray surface brightness (0.6-1.0 keV) and gamma-ray intensity (Eγ ≳ 100 GeV) at high Galactic latitudes.
Two cuts are considered in the Galactic north for (a): l = + 70°, (b): l = + 65°, with X-ray (red dashed lines) and gamma-ray (blue lines). The all-sky significance map is shown in (c), where the span of cuts are marked. The cut in the Galactic south (d): l = − 60° is considered. Lower latitudes are not considered to avoid the influence of foreground structures or the Fermi Bubbles. The two energy bands have shown enhancements beyond the background within the edges of the X-ray outer halo, and the edges of the enhancements are in agreement with a separation of only a few degrees. The consistencies are observed in the southern cut, but the enhanced plateau is less evident for the southern Bubble.
