XMM-Newton observations of the non-thermal supernova remnant HESS J1731-347 (G353.6-0.7)

Abstract

We report on the analysis of XMM-Newton observations of the non-thermal shell-type supernova remnant HESS J1731-347 (G353.6-0.7). For the first time the complete remnant shell has been covered in X-rays, which allowed direct comparison with radio and TeV observations. We carried out a spatially resolved spectral analysis of XMM-Newton data and confirmed the previously reported non-thermal power-law X-ray spectrum of the source with negligible variations of spectral index across the shell. On the other hand, the X-ray absorption column is strongly variable and correlates with the CO emission thus confirming that the absorbing material must be in the foreground and reinforcing the previously suggested lower limit on distance. Finally, we find that the X-ray emission of the remnant is suppressed towards the Galactic plane, which points to lower shock velocities in this region, likely due to the interaction of the shock with the nearby molecular cloud.

arXiv comment11 pages, accepted in A&A

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Cited by in corpus (12)

• Evolution of high-energy particle distribution in Supernova Remnants
• Detection of two TeV shell-type remnants at GeV energies with Fermi-LAT: HESS J1731-347 and SN 1006
• Probing The Local Environment of the Supernova Remnant HESS J1731-347 with CO and CS Observations
• TeV cosmic ray nuclei acceleration in shell-type supernova remnants with hard $\gamma$-ray spectra
• Detection of GeV $\gamma$-ray emission in the direction of HESS J1731-347 with Fermi-LAT
• Observational constraints on the maximum energies of accelerated particles in supernova remnants: low maximum energies and a large variety
• CXOU J160103.1-513353: another CCO with a carbon atmosphere?
• Electron Acceleration in Middle-age Shell-type $\gamma$-Ray Supernova Remnants
• Study on the escape timescale of high-energy particles from supernova remnants through thermal X-ray properties
• On the Expansion, Age, and Origin of the Puzzling Shell/Pulsar Wind Nebula G310.6-1.6
• Is the SNR HESS J1731-347 colliding with molecular clouds?
• Expansion and ongoing cosmic ray acceleration in HESS J1731-347