The Remarkably Cool X-ray Spectrum of the QSO comma 1H 0419-577

The origin of the hard Xray excess and coronal emission are key to ourunderstanding of AGN. The nearby (z0.104) luminous QSO, 1H0419577 shows one of the strongest hard excesses and one of the most extreme high energy cutoffs observed to date from any AGN. If its origin is due to thermal Comptonization, then this implies a remarkably low corona temperature of kT14keV. Here we propose simultaneous 3x50ks XMMNewton and NuSTAR observations of 1H0419577 to understand both the nature and variability of the corona and its response to the illuminating continuum. This will reveal the true form of the Xrays produced from close to the central black hole. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]