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   51095
   There are several cusps structure outside the Vela SNR. They are
   strongly considered as shrapnels launched in the SN explosion. We
   observed A and D so far. A mainly consists of Si and D is heavily
   overabundant of Mg and Ne. Judging from the size and the abundance, the
   small size of shrapnel favors the high Z elements suggesting that the
   small shrapnel comes from the far inside of the star. There are four
   shrapnels observable with Asca while two of them were observed. We
   propose to observe the rest of two: they are B and E. E is in between A
   and D in size while B is bigger than D. The stellar structure and the
   instability produced inside the star will be really seen in X-ray
   regions which has been studied only in the theoretical frame work.
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