Fig. 2

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X-ray spectra of four rings and their combination from ObsID 15615 of the Terzan 5 field, in the energy band 0.3–12 keV. The observed spectra (un-subtracted) are shown as colored dots, while the background spectra extracted from corresponding blank-sky files are shown as crosses, with photons grouped into 50 counts per bin. Shaded regions indicate where the observed and background spectra are almost indistinguishable. The spectra of each ring are scaled to provide adequate spacing for display purposes.
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