We report on Suzaku results of the two distinct regions in the Galactic supernova remnant G348.5 + 0.1 : extended thermal X-rays ( ” soft diffuse ” ) at the northeast region and non-thermal X-rays ( CXOU J171419.8 - 383023 ) at the northwest region .
The X-ray spectrum of the soft diffuse is fitted with neither an ionization equilibrium nor a non-equilibrium ( ionizing ) plasma model , leaving saw-teeth residuals in the 1.5–3 keV energy band .
The residual structures can be produced when free electrons are recombined to the K-shells of highly ionized Mg and Si ions .
In fact , the X-ray spectrum is nicely fitted with a recombination-dominant plasma model .
We propose a scenario that the plasma in nearly full ionized state at high temperature quickly changed to a recombining phase due to selective cooling of electrons to a lower temperature of \sim 0.5 keV .
The spectrum of CXOU J171419.8 - 383023 is well explained by a simple power-law model with a photon index of 1.9 , nearly equal to the typical value of pulsar wind nebulae .
Since the distance is estimated to be the same as that of the soft diffuse , we infer that both the soft diffuse and CXOU J171419.8 - 383023 are associated with the same object , SNR G348.5 + 0.1 .