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We present new ATCA 17- and 24-GHz radio images and ESO-NTT optical spectraof the radio-loud Seyfert galaxy IC5063, the first galaxy in which a fast (~600 km/s) outflow of neutral hydrogen was discovered. The new radio dataconfirm the triple radio structure with a central core and two resolved radiolobes. This implies that the previously detected fast outflow of neutral gas isoccurring off-nucleus, near a radio lobe about 0.5 kpc from the core. Theionised gas shows complex kinematics in the region co-spatial with the radioemission. Broad and blueshifted (~ 500 km/s) emission is observed in the regionof the radio lobe, at the same location as the blueshifted HI absorption. Thevelocity of the ionised outflow is similar to the one found in HI. The firstorder correspondence between the radio and optical properties suggests that theoutflow is driven by the interaction between the radio jet and the ISM. Despitethe high outflow velocities, no evidence is found for the ionisation of the gasbeing due to fast shocks in the region of the outflow, indicating thatphotoionisation from the AGN is likely to be the dominant ionisation mechanism.The outflow rate of the warm (ionised) gas is small compared to that of thecold gas. The mass outflow rate associated with the HI is in the same range asfor ``mild'' starburst-driven superwinds in ULIRGs. However, in IC5063, theAGN-driven outflow appears to be limited to the inner kpc region of the galaxy.The kinetic power associated with the HI outflow is a small fraction (a few x10^-4) of the Eddington luminosity of the galaxy but is a significant fraction(~ 0.1) of the nuclear bolometric luminosity. In IC5063, the outflows may havesufficient kinetic power to have a significant impact on the evolution of theISM in the host galaxy.

IC5063: AGN driven outflow of warm and cold gas