BAT AGN Spectroscopic Survey -- XVII: The Parsec-scale Jet Properties of
  the Ultra Hard X-ray Selected Local AGN
  We have performed a very long baseline interferometry (VLBI) survey of local
(z < 0.05) ultra hard X-ray (14-195 keV) selected active galactic nuclei (AGN)
from the Swift Burst Alert Telescope (BAT) using KVN, KaVA, and VLBA. We first
executed fringe surveys of 142 BAT-detected AGN at 15 or 22 GHz. Based on the
fringe surveys and archival data, we find 10/279 nearby AGN (~4%) VLBI have 22
GHz flux above 30 mJy. This implies that the X-ray AGN with a bright nuclear
jet are not common. Among these 10 radio-bright AGN, we obtained 22 GHz VLBI
imaging data of our own for four targets and reprocessed archival data for six
targets. We find that, although our 10 AGN observed with VLBI span a wide range
of pc-scale morphological types, they lie on a tight linear relation between
accretion luminosity and nuclear jet luminosity. Our result suggests that a
powerful nuclear radio jet correlates with the accretion disc luminosity. We
also probed the fundamental plane of black hole activity at VLBI scales (e.g.,
few milli-arcsecond). The jet luminosity and size distribution among our sample
roughly fit into the proposed AGN evolutionary scenario, finding powerful jets
after the blow-out phase based on the Eddington ratio (\lambda_{Edd})-hydrogen
column density (N_{H}) relation. In addition, we find some hints of gas inflow
or galaxy-galaxy merger in the majority of our sample. This implies that gas
supply via tidal interactions in galactic scale may help the central AGN to
launch a powerful parsec-scale jet.
