Powerful ionized gas outflows in the interacting radio galaxy 4C+29.30

We investigate the ionized gas excitation and kinematics in the inner 4.3 x 6.2 kpc(2) of the merger radio galaxy 4C+29.30. Using optical integral field spectroscopy with the Gemini North Telescope, we present flux distributions, line-ratio maps, peak velocities and velocity dispersion maps as well as channel maps with a spatial resolution of approximate to 955 pc. We observe high blueshifts of up to similar to-650 km s(-1) in a region similar to 1 arcsec south of the nucleus (the southern knot - SK), which also presents high velocity dispersions (similar to 250 km s(-1)), which we attribute to an outflow. A possible redshifted counterpart is observed north from the nucleus (the northern knot - NK). We propose that these regions correspond to a bipolar outflow possibly due to the interaction of the radio jet with the ambient gas. We estimate a total ionized gas mass outflow rate of (M)over dot(out) = 25.4(-7.5)(+11.5) M-circle dot yr(-1) with a kinetic power of (E)over dot = 8.1(-4.0)(+10.7) x 10(42) erg s(-1), which represents 5.8(-2.9)(+7.6) per cent of the active galactic nucleus (AGN) bolometric luminosity. These values are higher than usually observed in nearby active galaxies with the same bolometric luminosities and could imply a significant impact of the outflows in the evolution of the host galaxy. The excitation is higher in the NK - that correlates with extended X-ray emission, indicating the presence of hotter gas - than in the SK, supporting a scenario in which an obscuring dust lane is blocking part of the AGN radiation to reach the southern region of the galaxy.