0720014

We propose to conduct two fixed-time observations (237 ks + 150 ks) of the galactic microquasar SS433 covering the egress from the primary orbital eclipse and ingress into the following primary eclipse near the face-on disk precessional phase of the source in November 2010. The main scientific goal is to carry out hard X-ray spectroscopy of the primary eclispe ingress/egress and to study its highly variable form. The phase-resolved spectroscopy will be used to probe the structure and physical parameters of a 20 keV rarefied corona around the center of the supercritical accretion disk in SS433 discoverd in previous INTEGRAL observations. The proposal is not associated with the AO-7 Key Programs. [truncated! Please see actual data for full text]