0220133

As a follow-up of the 2 Msec observation in AO-1 we propose a newdeep 2 Msec exposure of the field of the GalacticCenter. Observations of the GC region make the best use of the uniqueINTEGRAL capabilities and undoubtedly are the most efficient investment of its preciousobserving time. With the proposed observation the total INTEGRALexposure of the GC field will exceed 5 Msec by the end of AO-2doubling the number which will be achieved after completion of the AO-1. As confirmed by the preliminary analysis of the first ~0.5 Msecof the AO-1 observations the guaranteed science includes detailedstudy of the diffuse Gamma-ray line and continuum emissionmonitoring of Sgr A* and of dozens of X-ray binaries study oftransient phenomena. Should this proposal beaccepted the data will be made available during the proprietaryperiod to scientists of major astrophysical institutions of Russia. [truncated! Please see actual data for full text]