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We present optical integral field spectroscopy of the inner $2.5 \times 3.4$kpc$^2$ of the broad-line radio galaxy Pictor A, at a spatial resolution of$\approx 400$ pc. Line emission is observed over the whole field-of-view, beingstrongest at the nucleus and in an elongated linear feature (ELF) crossing thenucleus from the south-west to the north-east along PA $\sim 70^\circ$.Although the broad double-peaked H$\alpha$ line and the [OI]6300/H$\alpha$ and[SII]6717+31/H$\alpha$ ratios are typical of AGNs, the [NII]6584/H$\alpha$ratio (0.15 - 0.25) is unusually low. We suggest that this is due to theunusually low metallicity of the gas. Centroid velocity maps show mostlyblueshifts to the south and redshifts to the north of the nucleus, but thevelocity field is not well fitted by a rotation model. Velocity dispersions arelow (< 100 km s$^{-1}$) along the ELF, ruling out a jet-cloud interaction asthe origin of this structure. The ELF shows both blueshifts and redshifts inchannel maps, suggesting that it is close to the plane of the sky. The ELF isevidently photoionized by the AGN, but its kinematics and inferred lowmetallicity suggest that this structure may have originated in a past mergerevent with another galaxy. We suggest that the gas acquired in this interactionmay be feeding the ELF.

Integral Field Spectroscopy of the circumnuclear region of the Radio Galaxy Pictor A