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We investigate the relation between the X-ray nuclear emission, opticalemission line, radio luminosity and black hole mass for a sample of nearbySeyfert galaxies. Strong linear correlations between the 2-10 keV and [OIII],radio luminosities have been found, showing the same slopes found in quasarsand luminous Seyfert galaxies, thus implying independence from the level ofnuclear activity displayed by the sources. Moreover, despite the wide range ofEddington ratios (L/L(Edd)) tested here (six orders of magnitude, from 0.1 downto 10^(-7), no correlation is found between the X-ray, optical emission lines,radio luminosities and the black hole mass. These results suggest that lowluminosity Seyfert galaxies are a scaled down version of luminous AGN andprobably are powered by the same physical processes.Comment: 6 pages, 3 figures, contributed talk presented at the Workshop "The  multicoloured landscape of compact objects and their explosive origin",  Cefalu' (Sicily), 11-24 June 2006, to be published by AI

Multi‐wavelength and black hole mass properties of Low Luminosity Active Nuclei