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   63016
   ASCA revealed the existence of absorption by a partially ionized
   plasma, the warm absorber in AGN. Partially ionized plasma in AGN is
   also regarded as a source of optical and infrared forbidden high
   ionization lines (FHILs). Comparison with photoionization models
   indicates similiar temperature and density for the warm absorber and
   the FHIL plasma. Moreover there exists a correlation between the ROSAT
   PSPC spectral index and the FHIL strengths. If the warm absorber and
   the FHIL plasma are identical, the FHIL line profiles can be used to
   derive the kinematics and dynamics of the warm plasma. To test this
   hypothesis we want to measure the strength of the warm absorber effect
   in two AGN which are known to have particularly strong FHILs and
   compare the results with photoionization models.
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