A Hard Medium Survey with ASCA. IV: the Radio-Loud Type 2 QSO AXJ0843+294 2

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 Gamma = 1.72+0.3-0.6 and intrinsic absorbing column density of NH = 1.44+0.33-0.52 x 1023 cm-2. The intrinsic luminosity in the 0.5-10 keV energy band is $ ~ meq$3x 1045 erg s-1, well within the range of quasar luminosities. AX J0843+2942, positionally coincident with the core of a triple and strong (S1.4 GHz “¡­m 1 Jy; P1.4 GHz “¡­m 9x 1033 erg s-1 Hz-1) radio source, is spectroscopically identified with a Narrow Line object (intrinsic FWHM of all the permitted emission lines la 1200 km s-1) at z=0.398, 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.