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   61072
   Recent discovery of the Annihilation fountain close to the galactic
   center is one of the most dramatic results of the OSSE instrument
   onboard CGRO gamma-ray satellite. Plausible coincidence of the spatial
   distribution of the line at 511 keV from positron annihilation with the
   galactic spur reported at 408MHz would be a signiture of a jet or a
   wind from the nucleus of our galaxy. We propose to (1) study the
   physical condition at the annihilation site and (2) identify the
   outflowing wind triggered by the past star burst activity.
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