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   PR # 42113
   The high sensitivity of ASCA in the 0.4-10 keV energy band and the
   good SIS energy resolution are particularly useful for the study of
   complex absorption. ASCA can provide us with unique information about
   the physical state of the absorbing gas, its location and its
   geometry. Ionized absorbers have been so far studied by ASCA in a
   handfull of sources only. To increase the sample we propose ASCA
   observations of two bright AGN which showed evidences of ionized
   absorption in previous ROSAT observations.
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