XMM-Newton EPIC pn spectrum and model of the central tessellate of the new observation. The residuals are shown in the lower panel. The different model components are shown with dashed, dotted, and dash-dotted lines as indicated in the legend. The fit model uses two APEC components to account for the diffuse X-ray emission (cold and hot apec in legend). For better presentation, the data were rebinned visually with either 30 counts or 3σ.