Published online by Cambridge University Press: 19 July 2016
Slit spectra have shown optical emission line gas in the vicinity of the radio jet and the north radio lobe of PKS 0812+020. Velocities up to −1000 km/s with respect to the central quasar are seen in the north lobe. The [OII] emission strength becomes comparable to the [OIII] near the north lobe, as would be expected from acceleration by shocks. We suggest this acceleration occurs by interaction with the radio-emitting jet.