*************************************************************************
   51031
   With the PV phase observation of the Rho-Oph dark cloud, we found hard
   X-ray emission from class 1 sources. From these objects, we found
   bipolar flow with the radio observations. These put the sources to be
   protostars at dynamical mass accretion phase. One of the hard X-ray
   sources (EL29) shows a flare and other (WL6) shows sinusoidal variation
   suggesting star rotation of the protostar. Our proposal is to confirm
   this time variability (whether it is regular sinusoidal variation or
   not) and to make higher spatial resolution observation (observe at on
   axis position) to resolve source confusion and to search for X-rays
   from a younger object in the Rho-Oph cloud.
 *************************************************************************