XMM detection of the supernova remnant G337.2+0.1

Abstract

We report the first XMM detection of the SNR candidate G337.2+0.1 (=AX J1635.9-4719). The object shows centrally filled and diffuse X-ray emission. The emission peaks in the hard 3.0-10.0 keV band. A spatially resolved spectral study confirms that the column density of the central part of the SNR is about N_{H}~5.9 +/- 1.5*10^{22} cm^{-2} and its X-ray spectrum is well represented by a single power-law with a photon index Gamma=0.96 +/- 0.56. The non-detection of line emission in the central spectrum is consistent with synchrotron radiation from a population of relativistic electrons. Detailed spectral analysis indicates that the outer region is highly absorbed and quite softer than the inner region, with N_{H}~16.2(+/-5.2)*10^{22} cm^{-2} and kT=4.4(+/-2.8) keV. Such characteristics are already observed in other X-ray plerions. Based on the morphological and spectral X-ray information, we confirm the SNR nature of G337.2+0.1, and suggest that the central region of the source is a pulsar wind nebula (PWN), originated by an energetic though yet undetected pulsar, that is currently losing energy at a rate of ~ 10^{36} erg s^{-1}.

arXiv comment13 pages, 5 figures, Accepted for publication in Astrophysical Journal Letters

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Cited by in corpus (4)

• The 1st Fermi Lat Supernova Remnant Catalog
• The NuSTAR Hard X-ray Survey of the Norma Arm Region
• An X-ray study of the SNR G344.7-0.1 and the central object CXOU J170357.8-414302
• Chasing the Identification of ASCA Galactic Objects (ChIcAGO) - An X-ray Survey of Unidentified Sources in the Galactic Plane I: Source Sample and Initial Results