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   52145
   We propose to observe two "Narrow Line Seyfert 1's" (= NLS1's), Mrk 42
   and Mrk 957, with ASCA. These objects were chosen because of their
   extremely narrow Balmer lines and strong optical Fe II emission. Our
   targets (and NLS1's in general) are known to have very steep soft X-ray
   spectra, possibly due to strong soft X-ray excesses. They also vary
   rapidly in soft X-rays. In our ASCA observations we are seeking to
   learn whether these objects are steeper than usual above 2 keV. We want
   to see whether an abnormally steep hard X-ray spectrum (already found
   in one NLS1 with ASCA) is a common property of NLS1's. We will also
   search for flux and spectral variability and probe iron K-alpha line
   emission.
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