Relativistic Iron Line Fits

The 6.4\,keV Iron reflection line possesses strong diagnostic potential for AGN-systems. In the rare case of unobscured AGN, this line receives a contribution from the very center of the accretion flow close to the event horizon that is subject to strong relativistic effects. The shape of this line distortion can be used infer important parameters of the central accretion region, especially the black hole spin parameter $a*$ and the accretion disk inclination $i$.\\
We analyze several (nine?) bare AGN spectra from the sample of Walton et al. 2012 using high resolution spectra from the XMM and NuStar archives. The relativistic reflection is modeled using the \textsc{Relxill} code (Dauser 20XX). The newest iteration of the \textsc{Relxill} model also supports a lamp post geometry for the irradiation of the accretion disk.\\
By combining these detailed models with the wide spectral range of NuStar and XMM/NuStar joint observations we can put tight constraints on the aforementioned parameters and we can constrain the height of the source $h$ in a possible lamp post geometry.