Fig. 8.
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Contour plots obtained with two NTHCOMP components for the warm and hot coronae are shown in blue and red, respectively. Shaded regions indicate 68% confidence levels. Dashed red and blue lines indicate different Thomson optical depths obtained with the formula (A1) in Zdziarski et al. (1996). Gray circles and diamonds are data points reported in Petrucci et al. (2018) for their sample of 22 sources.
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