The peculiar WAT NGC 2329 with Seyfert/FR I-like radio lobes
  We report the complex radio properties of the radio galaxy NGC 2329 that
resides in the centre of the galaxy cluster Abell 569. For this study, we have
used archival data from the Very Large Array (VLA) at various resolutions and
frequencies, as well as the Very Long Baseline Array (VLBA). While the
wide-angle tailed (WAT) Fanaroff-Riley type I (FR I) radio morphology of the
source has been discussed widely in the literature, the nature of the inner
lobes has not been as widely discussed. In particular, we note that the inner
lobes resemble the bubble-like radio structures observed in Seyfert galaxies.
Polarization-sensitive data from the VLA clearly show magnetic field structures
consistent with FR Is for the outer lobes and Seyferts for the inner lobes in
NGC 2329. FR Is are classified as radio-loud (RL) active galactic nuclei (AGN)
and Seyferts as radio-quiet (RQ) AGN, making this source unique. The VLBA shows
a one-sided radio jet suggesting a relativistic pc-scale outflow, leading into
the inner lobes. Electron lifetime estimates suggest that the outer FR I-like
lobes are nearly twice as old ($\sim$45 Myr) as the inner Seyfert-like lobes
($\sim$25 Myr). Gas inflow in this merging cluster seems to have rejuvenated
the AGN about $\sim$25 Myr ago, and may have caused a change in the accretion
disc state. The complex composite radio morphology of NGC 2329 suggests that
the RL/RQ dichotomy is a function of time in the lifecycle of an AGN.
