On‐SNR spectra of DA 530 (black) and the local background (red). Also shown are the best‐fit model of the on‐SNR spectrum (solid lines), consisting of the free‐﹩N_{\mathrm{H}\,}﹩ vpshock model (see Table 1; diffuse emission) and a power law (Γ ~ 2; sky background). The two individual components are also plotted separately with dashed lines. The residuals of the fit are shown at the bottom.