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   71066
   We made timing analyses of about 30 sources in the LMC, using ASCA
   archival data. Almost all sources were proved to have no pulsation, but
   SNR 0453-68.5 showed weak evidence of 1.48sec pulsation. In addition,
   it was found that this SNR has hard component with photon index
   $\sim$2. These facts are uncommon to "normal" SNR. We made some
   hypotheses of what this hard component is; Crab-like pulsar or AXP or
   accretion-powered pulsar or SN1006-like SNR. But available data is
   statistically too poor to decide which hypothesis is true. So, we
   propose a long time re-observation of SNR 0453-68.5, to reveal feature
   of this hard component.
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