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   71139
   Steller black hole candidates (SBHC) shows two distinctive states
   depending on the X-ray flux; High state and Low state. The latter state
   is characterized with a hard power low spectrum and rapid variavility.
   AGN is believed to be a system with a super massive black hole. Its X-
   ray spectrum and variability resembles the SBHC in its low state.
   Nevertheless, a new class of AGNs showing extremely soft spectrum (
   resembleing SBHC high state) has been found. Most of them are
   classified as narrow line Seyfert 1 type. So far, however, no
   transition was observed for a particular AGNs between low to hard
   state. In this proposal, we try to catch it by observing 6 NLS1s which
   was previously observed with ASCA and showed sfot spectrum. IRAS
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