The UV to hard X-ray continuum of a Seyfert galaxy scrutinized by XMM and NuSTAR

We propose to perform a unique XMMNuSTAR monitoring with 5 repeatedobservations of 20 ks spaced by a few days of the Seyfert galaxy NGC 4593. Thisis the best Seyfert candidate to obtain high sensitivity measurements on a daytime scale over the entire high energy spectrum. This is an absoluteprerequisite 1) to correctly disentangle the different spectral componentspresent in this energy band, and 2) to reveal their complex interdependences andvariability behavior. This study will allow us i) to constrain the physicalparameters of the Comptonizing corona; ii) to investigate the nature of the softXray excess; iii) to put firm conclusions on the distance, nature and geometryof the reflecting material(s). truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]