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   PR # 41084
   44Ti is the radio isotope which is synthesised with supernova
   explosions. Since its half-life is very short --- about 48 yr ---, it
   has been regarded as a good indicator of young supernova remnants
   (SNR). In 1994, 44Ti gamma-ray emission line (1.157 MeV) was actually
   detected from Cas A using COMPTEL. From not only Cas A but also
   another region, 77Ti emission has been detected. We propose the ASCA
   pointing observation of the region in search for the youngest
   unidentified Galactic SNR. This observation aimes to establish the
   method of the very young SNR search and to make clear its physics. We
   think this is the good case of the international collaboration using
   COMPTEL, ROSAT, Einstein, Ginga and ASCA data. At the same time, we
   place it as the pilot observation of ASTRO-E.
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