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While the theory behind the relativistic Fe line in spectra of accreting compact objects lays on solid grounds, the observational evidence for relativistically broadened Iron lines for both stellar and supermassive black holes is still at the centre of controversial debate. To address this topic, the FERO project makes use of the largest sample of X‐ray spectra of radio quiet Type 1 AGN available in the XMM‐Newton archive. We perform a systematic fit of the individual sources using a full relativistic code. The main results on the first part of the project are presented in these proceedings.

High resolution spectroscopy is acquiring increasing importance in the study of AGNs. We discuss the results on three Seyfert galaxies (Mrk 335, NGC 4051, and NGC 1365).

While in Radio–Quiet (RQ) AGN warm gas photoionised by the nuclear engine has been well revealed and studied in X‐rays, it is still unclear whether a similar gaseous environment can survive in Radio–Loud (RL) objects. The exploration of the environment surrounding the nuclei of RL sources is an important point to be addressed. It can help to understand the physical link among accretion flows, winds and jet, and the influence that each component can have on the host galaxy. We report on the recent discovery of warm gas in RL AGN, indicating that relativistic collimated plasma (jet) and slower outflows of photoionised gas can coexist in the same source. The physical properties of this gas seem to be very similar to RQ ones, suggesting that RL and RQ AGN environment becomes indistinguishable at large distances from the central engine (e.g. the Narrow Line Region).