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   PR # 41274
   The Shapley Supercluster is one of the nearest Supercluster and the
   rechest in the nearby Supercluster. There are four clusters of
   galaxies (A3562, SC1329-313, SC1327-312, A3558) are in a samall
   region of ~10Mpc around the supercluster core. The sum of the
   gravitational masses of the four clusters is enough to confine the
   four clusters itselves gravitationally. The observational fact that
   EXOSAT flux around A3562 exceeds Einstain flux by factor of two
   implies an existance of diffuse X-ray component whose surface
   brightness is too low to be detected with Einstein. The prime purpose
   is to detect the diffuse X-ray emission. Probably its origin is hot
   gas confined by the supercluster gravitational potential.
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