Fig. 5
Confidence regions to investigate possible intrinsic correlation between the CRSF centroid energy ECRSF and the parameters of the Gaussian line describing the 10 keV feature in the continuum. The left and right columns show results for observations I and II, respectively. The contours correspond to the 1σ, 2σ, and 3σ confidence levels for the two parameters of interest. The colour scale indicates Δχ2: darker areas correspond to lower Δχ2. Aadd is in photons s-1 cm-2 keV-1 at 1 keV.
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