The X-ray spectrum of an X-ray bright quasar comma PMN0525 comma at z=4.41

PMN 0525336 is a powerful radioloud quasar at z4.41. Its high Xraybrightness of 1e12 erg/s/cm2 in the 210 keV band and low Galactic column density of 2.2e20 mean that EPIC pn will give an excellent spectrum over the 0.565 keV rest band. It is one of a small set of blazars at z>4 which show extreme properties, possibly as a result of their high power. We propose to observe it with XMM to determine the spectral curvature and to search for intrinsic absorption (the host galaxy is likely still forming). truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]