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   51099
   The origin of the cosmic-ray is the enigma since its discovery. SNRs
   are the most strong candidate, but the observed upper energy of non-
   thermal particle had been only 10^10 eV, which is much smaller than the
   cosmic-ray up to 10^15 eV is the Galactic origin. Now, ASCA has made
   clear that SN 1006 has strong non-thermal emission from ~10^14 eV
   electrons and the similar emission should be found in other SNRs. We
   propose the observation of X-ray synchrotron emission from SNRs which
   contain EGRET point sources to confirm ~10^14 eV electron and make
   clear the nature of the shock acceleration in SNR.
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