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   PR #   159
   RCW103 is observed with {\it Einstein Observatory} and known to be a
   unique SNR wce. The energy spectrum of it is known to be a}} % with
   HEAO-1. thermal origin wh\times$10$^{6}$K with HEAO-1.But the iron
   line emission feature is still unclear. This observation will givethe
   strictest upper limit of flux or possible detection of it.The result
   can be lead its ionization state; RCW103 seems young, a few 10E3
   yearsAoki and his cooperators had found confident 69 or 138 ms
   pulsation from {\it GinThe pulsar can be link the central point source
   {\it 1E161348-5055.1}which had been considered to be a hot neutron
   star.The period derivative must lead the age of the pulsar.The spatia
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