An X‐Ray Image of the Composite Supernova Remnant SNR G16.7+0.1

We have observed the Galactic supernova remnant G16.7+0.1 for 13 ks using theEPIC cameras aboard the XMM-Newton X-ray Observatory, producing the first X-rayimage of the remnant. This composite radio remnant has a core radio fluxdensity of only 100 mJy, making it one of the faintest radio synchrotronnebulae yet detected, although the core-to-shell flux ratio at 6 cm is typicalof the growing class of composite remnants. Our image is seriously contaminatedby bright arcs produced by singly reflected X-rays from the X-ray binary GX17+2which lies just outside the field of view, providing an interesting dataanalysis challenge. Nonetheless, the remnant's synchrotron core is clearlydetected. We report on the spectrum and intensity of the core emission as wellas on our search for emission from the thermal shell, and describe theconstraints these observations provide on the remnant's distance, age, andcentral pulsar properties.Comment: 12 pages, 4 figures. Scheduled to appear in the September 1 Astrophysical Journa