The 1.4-GHz radio properties of hard X-ray-selected AGN
Bird, A. J.; Ubertini, P.; Malizia, A.; Bassani, L.; Bazzano, A.; Panessa, F.; Maiorano, E.; Tarchi, A.; Castangia, P.; Bicknell, G.
Italy, Australia, United Kingdom
Abstract
We have analysed the NRAO Very Large Array Sky Survey and Sydney University Molonglo Sky Survey data at 1.4 GHz and 843 MHz for a well-defined complete sample of hard X-ray AGN observed by INTEGRAL. A large number (70/79) of sources are detected in the radio band, showing a wide range of radio morphologies, from unresolved or slightly resolved cores to extended emission over several hundreds of kpc scales. The radio fluxes have been correlated with the 2-10 keV and 20-100 keV emission, revealing significant correlations with slopes consistent with those expected for radiatively efficient accreting systems. The high-energy emission coming from the inner accretion regions correlates with the radio emission averaged over hundreds of kpc scales (i.e. thousands of years).