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

Abstract

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

arXiv comment4 pages, 3 figures. Accepted for publication in Astronomy and Astrophysics Letters

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• GeV γ-ray Emission Detected by Fermi-LAT Probably Associated with the Thermal Composite Supernova Remnant Kesteven 41 in a Molecular Environment
• An X-ray study of the SNR G344.7-0.1 and the central object CXOU J170357.8-414302
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