Volume 406, Number 2, August I 2003
|Page(s)||555 - 563|
|Published online||17 November 2003|
A hard medium survey with ASCA
IV. The radio-loud type 2 QSO AX J0843+2942
Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy e-mail: firstname.lastname@example.org; email@example.com; firstname.lastname@example.org; email@example.com; firstname.lastname@example.org
2 Dipartimento di Astronomia, Università degli Studi di Padova, vicolo dell'Osservatorio 2, 35122 Padova, Italy
3 INTEGRAL Science Data Centre, Chemin d'Ecogia 16, 1290 Versoix, Switzerland e-mail: Volker.Beckmann@obs.unige.ch
4 Dipartimento di Scienze, Università dell'Insubria, Como, Italy e-mail: email@example.com
5 Istituto di Radioastronomia CNR, via P Gobetti 101, 40129, Bologna, Italy e-mail: firstname.lastname@example.org
Corresponding author: R. Della Ceca, email@example.com
Accepted: 16 May 2003
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.
Key words: galaxies: active / quasars: individual: AX J0843+2942 / X-rays: galaxies / X-rays: individual: AX J0843+2942
© ESO, 2003
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