TheXMM‐NewtonView of the Relativistic Spectral Features in AX J0447−0627

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The XMM-Newton observation of the optically type 1 active galactic nucleus (AGN) AX J0447-0627 (z = 0.214) unambiguously reveals a complex, bright, and prominent set of lines in the 4-8 keV rest-frame energy range. Although from a phenomenological point of view, the observed properties can be described by a simple power-law model plus five narrow Gaussian lines (at rest-frame energies of ~4.49, ~5.55, ~6.39, ~7.02, and ~7.85 keV), we find that a model comprising a power law (Γ ~ 2.2), a reflected relativistic continuum, a narrow Fe I Kα line from neutral material, as well as a broad Fe Kα relativistic line from a ionized accretion disk, represents a good physical description of the data. The "double-horned" profile of the relativistic line implies an inclination of the accretion disk of ~45° and an origin in a narrow region of the disk, from Rin ~ 19GM/c2 to Rout ~ 30GM/c2. The narrow Fe I Kα line from neutral material is probably produced far from the central black hole, most likely in the putative molecular torus. Although some of these properties have already been found in other type 1 AGNs and discussed in the literature, at odds with the objects reported so far we measure high equivalent widths of the observed lines: ~1.4 keV for the double-horned relativistic line and ~0.4 keV for the narrow line.