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   61025
   A jet (galactic jet, SS433 jet, YSO jet) is thought to be accelerated
   in the most inner region of the infalling disk. However, the mechanism
   of the acceleration is unknown. Our goal is TO DETECT THE ACTUAL SPOT
   OF ACCELERATION. We choose YSO jet as the target because the physical
   parameter of jet is obtained the most precisely. The central engine
   (protostar itself) has never been detected in the other wave length
   because of the high absorption (Av$>$100mag), but in the hard X-ray of
   ASCA we can detect. Our targets are Parsec-Scale HH jets for an analogy
   of 'Flare-Jet phenomena of R1(R CrA)'. Several targets have no driving
   source. Our second aim is TO DISCOVER THE DRIVING SOURCE. This will
   demonstrate the new capability of hard X-ray.
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