Fig. 8.
Upper: 0.3–10.0 keV spectral slope from absorbed power-law fits to the XMM-Newton (blue circles) and Swift (red diamonds) observations of XMMSL2 J1446+68. Some of the Swift observations have been combined to reduce the error bar size. Lower: source spectral hardness expressed as the ratio of the 1.5–8 keV to 0.3–1.5 keV fluxes.
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