Fig. 3
XMM-Newton spectral fits of the background regions. Top-left: simultaneous spectral fits to the background region NE, and corresponding FWC spectra extracted from EPIC-MOS2 (green and blue) and EPIC-pn (black and red). The dashed lines show the combined AXB contribution while the dotted lines show the combined particle-induced contribution to the extended emission spectra. For clarity, only spectra from ObsID 0763120301 are shown. Top-right: same as top-left but for background region NW. Bottom-left: same as top-left but for background region SE. In this case the spectra from ObsID 0763120101 are shown. Bottom-right: simultaneous fits to all background spectra with each background region source and FWC spectrum shown in a different colour. The combined AXB and FWC contributions are also shown for each. See text for details.
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