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Fig. 7

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EPIC-pn and EPIC-MOS spectra of IGR J16328−4726. The higher three spectra were extracted by selecting only the time intervals in which the EPIC-pn source count-rate was  >1.5 cts/s (0.5–12 keV, see Fig. 4). The lower three spectra were extracted during time intervals in which the count-rate was  <0.7 cts/s (same energy band). GTIs from the EPIC-pn were used also to extract the corresponding EPIC-MOS spectra. The best-fit model (solid line; /d.o.f. = 0.9/332) is obtained with an absorbed power-law (the residuals from the fit are shown in the bottom panel). We obtained for the highest spectra NH = (17.4 ± 1.7) × 1022 cm-2 and Γ = 1.6 ± 0.2; for the lower spectra we obtained NH = (18.2 ± 1.8) × 1022 cm-2 and Γ = 1.5 ± 0.2. The corresponding observed 2–10 keV X-ray fluxes were 2.2  ×  10-11 erg/cm2/s and 4  ×  10-12 erg/cm2/s, respectively.

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