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   51029
   In the R CrA star forming region, the protostar R1 had been the most
   powerful X-ray and IR source. But, recently R1 reduced its IR flux, and
   couldn't be detected in the IR observation. We observed this region
   twice with the ASCA AO2 and AO4 phase, and also found that R1 have
   reduced its X-ray flux. We now can't determine the reason of this
   phenominon because of the lacking of data, but, It may reveal the
   dynamic change of the environment of the protostar R1. To confirm this,
   We must continue the observation of this region. Thus, We propose to
   monitor the R CrA star forming region again.
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