Fig. 4.
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Results of a Differential Emission Measure (DEM) analysis of the ROI at four selected temperatures (a) 0.8, (b) 1.2, (c) 1.6, and (d) 2.5 MK. These plots show the Fractional Emission Measure (FEM), which is the emission at a given temperature divided by the total emission (integrated over all temperatures) at that pixel expressed as a percentage, as shown in the colour bars.
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