Fig.3 Colour image made from the 0.3–1.2 (red), 1.2–2 (green) and 2–7
keV (blue) bands. A 10-arcsec smoothed image has been scaled to 80 per
cent of its intensity and then subtracted in order to bring out fainter features
lost in the high-intensity range of raw images. The blue structure to the N
of the nucleus is caused by absorption in the infalling high-velocity system, We suspect that these arc-like pressure minima are old bubbles.
projected at least 60 kpc in front of the nucleus of NGC 1275 (Gillmon, The large size of these bubbles could indicate that the activity was
Sanders & Fabian 2004).
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