Three-color composite images of the X-ray emission in the soft bands ([0.5, 2] keV; left panels) and hard bands ([3, 10] keV; right panels) integrated along the LoS at year 40 for the HD model of Orlando et al. (2015; upper panels) and for the MHD modelMOD-B1 (lower panels). Each image has been normalized to its maximum for visibility and smoothed with a Gaussian 0.025 arcsec in size. The colors in the composite show the contribution to emission from the different shocked plasma components, namely the ejecta (green), the ring (red), and the H II region (blue); yellow regions result from the combinationof red and green.