SED of MCSNR J0512−6707. The data points at the lower frequencies are the radio flux densities reported in Reid et al. (2015). The data at the higher frequencies correspond to the background-subtracted EPIC-pn spectrum from Obs. ID 0741800201 in the 2–7 keV range, which excludes the contribution of the soft X-ray component. The red dotted line shows the power-law fit to the radio data, the green dashed line shows the exponentially cut-off power law fit to the entire SED, the magenta dash-dot line shows the exponentially cut-off power law fit to the X-ray data with α fixed to −0.7, and the blue solid line shows the exponentially cut-off power law fit to the X-ray data with α fixed to –0.52 determined by Reid et al. (2015). The grey lines indicate the upper and lower limit of the photon index in the X-ray power law fit (see Table 1).