089041

The high-energy emission of AGNs is mostly studied in nearby Seyferts. Bright QSOs on the other hand offer the opportunity to study accretion processes and AGN-driven winds in the less explored high luminosity regime. We propose a joint NuSTAR and XMM (100 ks) observation of HE 1029-1401 the most X-ray luminous AGN among local (z and amp amp amp lt 0.1) unobscured radio-quiet QSOs and a very intriguing source showing a significant soft excess and a broad iron line. The unique joint capabilities of NuSTAR and XMM will allow us to constrain the properties of the X-ray corona to assess the contribution of relativistic reflection and to determine the nature of the soft excess. We will also be able to search for X-ray winds such as warm absorbers and more powerful ultra-fast outflows. [truncated! Please see actual data for full text]