'Radio-loud' low luminosity AGN

Our VLBA survey of nearby bright LLAGN has found high brightness temperature (> 10(8) K) radio cores in 16 of 17 objects observed, with four of them even hosting parsec scale jets, strongly suggesting that at least 20% of LLAGN are accretion powered. Few LLAGN show the steep radio spectra expected in an advection dominated accretion flow (ADAF). However, the X-ray to radio, and M-bh to radio relationships, are consistent with the predictions of ADAF's. The compact cores and flat to inverted spectral indices in some LLAGN are consistent with the predictions of the scaled jet model of Falcke and collaborators. Plotted on a log P-2 cm vs. log Lemission-line diagram, all LLAGN in elliptical hosts, and most other LINERs and Transition objects which host compact radio cores, appear more closely related to radio galaxies than to 'classical' Seyferts. (C) 2002 Elsevier Science B.V. All rights reserved.