Interactions between the large-scale radio structures and the gas in a
  sample of optically selected type 2 quasars
  The role of radio mode feedback in non radio-loud quasars needs to be
explored in depth to determine its true importance. Its effects can be
identified based on the evidence of interactions between the radio structures
and the ambient ionised gas. We investigate this in a sample of 13 optically
selected type-2 quasars (QSO2) at z<0.2 with FIRST radio detections. None are
radio loud. All show complex optical morphologies, with signs of distortion
across tens of kpc due to mergers/interactions. The radio luminosity has an AGN
component in 11/13 QSO2. It is spatially extended in 9 of them
(jets/lobes/bubbles/other). The maximum sizes are in the range few kpc to ~500
kpc. Evidence for radio-gas interactions exist in 10/13 QSO2; that is, all but
one with confirmed AGN radio components. The interactions are identified across
different spatial scales, from the nuclear narrow line region up to tens of kpc
from the AGN. Large scale low/modest power radio sources can exist in
radio-quiet QSO2, which can provide a source of feedback on scales of the
spheroidal component of galaxies and well into the circumgalactic medium in
systems where radiative mode feedback is expected to dominate.
