Storm in a "Teacup": a radio-quiet quasar with ~10kpc radio-emitting
  bubbles and extreme gas kinematics
  We present multi-frequency (1-8 GHz) VLA data, combined with VIMOS IFU data
and HST imaging, of a z=0.085 radio-quiet type 2 quasar (with L(1.4GHz)~5e23
W/Hz and L(AGN)~2e45 erg/s). Due to the morphology of its emission-line region,
the target (J1430+1339) has been referred to as the Teacup AGN in the
literature. We identify "bubbles" of radio emission that are extended ~10-12
kpc to both the east and west of the nucleus. The edge of the brighter eastern
bubble is co-spatial with an arc of luminous ionized gas. We also show that the
Teacup AGN hosts a compact radio structure, located ~0.8 kpc from the core
position, at the base of the eastern bubble. This radio structure is co-spatial
with an ionized outflow with an observed velocity of v=-740 km/s. This is
likely to correspond to a jet, or possibly a quasar wind, interacting with the
interstellar medium at this position. The large-scale radio bubbles appear to
be inflated by the central AGN, which indicates that the AGN can also interact
with the gas on >~10 kpc scales. Our study highlights that even when a quasar
is formally "radio-quiet" the radio emission can be extremely effective for
observing the effects of AGN feedback.
