*************************************************************************
   52125
   Recent ROSAT observations of narrow-line Seyfert 1s (NLS1) have shown
   that they often have very steep soft X-ray spectra as well as rapid and
   sometimes amazing X-ray variability. Their peculiar behavior may arise
   via extremal values of some underlying physical parameter such as
   accretion rate. We have selected several bright and ultrasoft NLS1 for
   observation with ASCA. We will measure their hard X-ray spectra to see
   if they are different from those of more typical Seyfert 1s. Some NLS1
   do appear to have unusual hard X-ray spectra, and it is very important
   to understand how widespread this phenomenon is since it directly
   probes new Seyfert physics. We will study rapid and large amplitude
   flux variability as well as spectral variability.
 *************************************************************************