On the Hard X-ray Emission Detected from the Northwestern Rim of the Galactic Supernova Remnant G156.2+5.7
Abstract
The Galactic supernova remnant (SNR) G156.2+5.7 has been proposed to be a member of the class of Galactic SNRs that feature a significant hard component to their observed X-ray emission: prior X-ray observations have suggested that this X-ray emission is localized to the center and northwestern rim of this SNR. Recently, it has been argued that the observed hard X-ray emission detected from this SNR (specifically from the northwestern rim of the SNR) actually originates from a background cluster of galaxies seen in projection toward this rim. Therefore, it would appear that this SNR does not produce a significant amount of hard X-ray emission after all and its classification as a hard X-ray emitting SNR is misguided. To investigate the true nature of the observed X-ray emission, we have conducted a joint spectral analysis of ROSAT, ASCA and RXTE observations of this northwestern rim: we find an excess of hard X-ray emission beyond that expected from models for the emission from the background cluster and the diffuse X-ray background. We investigate whether this excess is produced by other background sources seen in the RXTE field of view or if the excess is produced by the SNR itself. Our spectral analysis and our initial results will be presented and discussed.
- Publication:
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American Astronomical Society Meeting Abstracts
- Pub Date:
- June 2013
- Bibcode:
- 2013AAS...22211810P