2003/05/27 by R. Della Ceca, V. Braito, V. Beckmann +6 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.1051/0004-6361:20030800
published as Astron.Astrophys. 406 (2003) 555-564 · 10 pages, 7 figures, Latex manuscript, Accepted for publication in Ast ronomy and Astrophysics
arxiv created 2003/05/27 · openalex publication_date 2003/07/16 · arxiv updated 2009/12/01 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/31
We discuss the X-ray, optical and radio properties of AX J0843+2942, a high luminosity Type 2 AGN found in the ASCA Hard Serendipitous Survey. The X-ray spectrum is best described by an absorbed power-law model with a photon index of and intrinsic absorbing column density of cm-2. The intrinsic luminosity in the 0.5-10 keV energy band is erg s-1, well within the range of quasar luminosities. AX J0843+2942, positionally coincident with the core of a triple and strong ( Jy; erg s-1 Hz-1) radio source, is spectroscopically identified with a Narrow Line object (intrinsic FWHM of all the permitted emission lines 1200 km s-1) at , having line features and ratios typical of Seyfert-2 like objects. The high X-ray luminosity, coupled with the high intrinsic absorption, the optical spectral properties and the radio power, allow us to propose AX J0843+2942 as a Radio-Loud “Type 2 QSO". A discussion of the SED of this object is presented here together with a comparison with the SED of Ultra Luminous Infrared Galaxies, other “Type 2 QSO" candidates from the literature, and “normal" Radio-Quiet and Radio-Loud QSOs.