Very massive radio-loud and radio-quiet AGN

Such a sample is selected from the Swift/BAT catalogue of AGN having determined optical spectra types and hosting black holes with masses >10^8.5^M_{sun}_. We confirm our previous results, that radio loudness distribution of Swift/BAT AGN is bimodal and that radio galaxies are about two times X-ray louder than their RQ counterparts.

We show that the average X-ray loudness (defined as a ratio of luminosity in the 14-195keV band to that at 12{mu}m) of Type 1 and Type 2 AGN is very similar. This similarity holds for both RL and RQ subsamples and indicates negligible dependence of the observed X-ray luminosities on the inclination angle in both populations. In both the radiative output is dominated by mid-IR and hard X-ray components, and relatively weak UV luminosities indicate large amounts of dust in polar regions.