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   51113
   Super Luminous Point Sources (SLPS) which is considered to be a single
   point source but have an X-ray luminosity of 10^{39} to 10^{40} erg/sec
   are found at off-center positions of about twenty nearby spiral
   galaxies. These sources still remain as one of the most mysterious
   classes of objects, even after extensive studies with Einstein, ROSAT,
   and ASCA. In particular ASCA observations revealed the X-ray spectra
   and temporal variations of many of this class of objects. For the
   further study of of these class of objects, we propose to observe two
   nearby spiral galaxies, NGC 2403 and NGC 6744, which contain three and
   one SLPS, respectively. We can reveal the X-ray spectrum and temporal
   variations of the four SLPS.
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