Fig. 2.
Left panel: composite RGB image of the X-ray count map of 3C 459. The native pixel size, corresponding to 0.492 arcsec, is shown. Different colors distinguish three energy bands: cyan (0.5–1.0 keV), magenta (1.0–2.0 keV), and yellow (2.0–7.0 keV). The contours of adopted extraction regions as described in Sect. 4.1 are marked with black dashed lines. Right panel: map of the hardness ratio obtained adopting 0.5–2.0 keV and 2.0–7.0 keV as the soft (white points) and the hard (black points) X-ray bands, respectively. A smoothing with a Gaussian (σ = 0.123″) has been applied.
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