Fig. 2
Inner parts (36° by 12°) of the INTEGRAL/ISGRI all-sky maps in Galactic coordinates, Aitoff projection. The significance image (top) in the 20–40 keV energy band, has square root scaling. The bottom image shows the corresponding intrinsic variance map, and also has square root scaling. The circle shows the inner 4° for which the variability background extraction was made from the box region.
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