The unified scheme seen with INTEGRAL detected AGN

V. Beckmann (1) , S. Soldi (2) , C. Ricci , T. J.-L. Courvoisier , J. Alfonso-Garzón , A. Domingo , J. M. Mas-Hesse , P. Lubiński , A. A. Zdziarski , N. Gehrels (3)

1 APC - AHE - APC - Astrophysique des Hautes Energies
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 GSFC - NASA Goddard Space Flight Center

The INTEGRAL mission provides a large data set for studying the hard X-ray properties of AGN and allows to test the unified scheme for AGN. We present results based on the analysis of 199 AGN. A difference between the Seyfert types is detected in slightly flatter spectra with higher cut-off energies and lower luminosities for the type 2 AGN. When applying a Compton reflection model, the underlying continua (Γ~=1.95) appear the same in Seyfert 1 and 2, and the reflection strength is R~=1 in both cases, with differences in the inclination angle only. More luminous objects appear to be more massive and there is also a general trend for the absorbed sources and type 2 AGN to have lower Eddington ratios. The number counts are consistent with no evolution of the observed AGN. The unified model for Seyfert galaxies seems to hold, showing in hard X-rays that the central engine is the same in Seyfert 1 and 2 galaxies, seen under different inclination angle and absorption.

Mots clés: Seyfert galaxies; brightness; X-ray spectra; Galactic nuclei; circumnuclear matter; and bulges; Quasars; active or peculiar galaxies; objects; and systems; Magnitudes and colors; luminosities; X-ray; Black holes

Domaines: Phénomènes cosmiques de haute energie [astro-ph.HE]; Phénomènes cosmiques de haute energie [astro-ph.HE]

V. Beckmann, S. Soldi, C. Ricci, T. J.-L. Courvoisier, J. Alfonso-Garzón, et al.. The unified scheme seen with INTEGRAL detected AGN. X-ray Astronomy 2009, Sep 2009, Bologna, Italy. pp.365-368, ⟨10.1063/1.3475259⟩. ⟨hal-00656060⟩