Oral title: A broad-band view on the intrinsic properties of the hard X-ray AGN detected by NuSTAR

Oral abstract: I will present a study of the average broad-band (2-40 keV) X-ray spectral properties of the AGN detected in 
the NuSTAR extragalactic survey. I investigated how the intrinsic parameters, such as the spectral slope, the strength of 
the iron K alpha line and of the Compton reflection hump, vary as a function of obscuration and luminosity of the sources. 
I found an anti-correlation between the reflection strength and the AGN X-ray luminosity, which is possibly due to 
differences in the intrinsic structure of the obscuring "torus" and/or of the X-ray corona.