Monitoring the awakening of the dormant SMBH at the center of our galaxy

The recently discovered G2 dense dusty gas cloud, infalling towards the dormantSMBH at the center of our galaxy SgrA*, should reach its pericenter in September2013. The Xray luminosity of SgrA* is expected to increase significantly atthis period and the fragmentation of this cloud should lead to an enhancedactivity period over several months/years. Therefore, we propose a large programto monitor SgrA* during the course of the G2 cloud near its pericenter passageand after this event, combining the XMMNewton highthroughput with severalmultiwavelength observations with groundbased telescopes and satellites. Thiswill offer us an unique opportunity to study accretion events on a dormant SMBHand its (re)activation process. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]