Highly ionized gas in PKS 2152-69
A gas cloud 10 arcsec to the NE of the nucleus of PKS 2152-69 exhibits many features that are more commonly associated with active nuclei. These include an extremely high ionization state with relatively strong emission lines from species like Ne +4 , He+, Fe +6 and Fe+9, blue asymmetric wings to the forbidden lines and a continuum that rises steeply to the blue. The proximity of the cloud to the radio axis and the tangential ionization gradients indicate that the cloud is energized by a narrow beam of radiation or plasma from the nucleus. Future studies of the cloud will have relevance to a number of long-standing problems in active galaxy research.
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