Extended line emission in AGN: looking at the central engine.
Regions of high excitation gas were detected around various active galactic nuclei. Their shape resembles a cone whose axis is oriented close to the radio axis. The radiation emitted by the nucleus may be responsible for the high ionization of the line emitting gas. Moreover there is evidence that the radiation field should be anisotropic and
Pulido, J. A. et al.
Fecha de publicación:
11
1989