NUCLEAR WINDS AND THE NARROW-LINE EMISSION FROM ACTIVE GALAXIES

This paper discusses active galaxy narrow-line emission in the context of a supersonic wind generated by the active nucleus, a nuclear wind. Wind acceleration can naturally produce the inferred narrow-line cloud velocities as well as those of the broad-line and broad absorption line clouds with only a weak dependence on the parameters of the active nucleus. The primary obstacle to wind acceleration of emission-line clouds is the destructive effect of instabilities; however. the stability and structure of wind-confined clouds remain areas of future research. Observations, particularly of the Seyfart galaxy NGC 1068, are interpreted in the context of nuclear winds.