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We report here on the first detection at X-ray wavelengths of the SupernovaRemnant (SNR) G337.8-0.1, carried out with the XMM-Newton Observatory. Usingthe X-ray observations, we studied the X-ray morphology of the remnant atdifferent energy ranges, analysed the spectral properties and investigated apossible variable behavior. The SNR shows a diffuse filled-center structure inthe X-ray region with an absence of a compact source in its center. We find ahigh column density of N_H > 6.9 * 10^{22} cm^{-2}, which supports a relativelydistant location (d > 7 kpc). The X-ray spectrum exhibits emission lines,indicating that the X-ray emission has a thin thermal plasma origin, and iswell represented by a non-equilibrium ionization (NEI) plasma model. The X-raycharacteristics and well-known radio parameters show that G337.8-0.1 belongs tothe emerging class of mixed-morphology (MM) SNRs.

Discovery of thermal X-ray emission in the Supernova Remnant G337.8-0.1 (Kes 41)