1321+045: a Compact Steep Spectrum radio source in a cool-core galaxy
  cluster
  Cluster-central gigahertz peak and compact steep spectrum (CSS) sources offer
an opportunity to study the earliest phases of AGN feedback, but few have yet
been examined in detail. We present results from radio and X-ray observations
of 1321+045, a CSS source in a 4.4 keV cluster at z=0.263. The cluster has a
strongly cooling core, and disturbances from a minor cluster merger may have
triggered a period of jet activity which formed the 16 kpc radio lobes 2.0
[+0.3,-0.2] Myr ago. However, new VLBA imaging shows a ~20 pc jet on a
different projected axis, which is probably only a few hundred years old. We
consider possible histories for the system, with either one or two periods of
jet activity. While this single system is informative, a broader study of the
youngest cluster-central radio sources is desirable.
