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Fig. 2

image

XMM-Newton and Chandra spectra. Upper spectra (in red) refer to the pn (0.610 keV) and MOS (0.310 keV) high state spectra. Middle spectra (in green) refer to pn and MOS low state spectra. The lowest spectra (in blue) refer to the quiescent state (among the two curves the highest refers to XMM-Newton data and the lowest to Chandra data). The fitting model is described in the text.

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