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The super-massive 4 million solar mass black hole (SMBH) SgrA* shows variableemission from the millimeter to the X-ray domain. A detailed analysis of theinfrared light curves allows us to address the accretion phenomenon in astatistical way. The analysis shows that the near-infrared flux densityexcursions are dominated by a single state power law, with the low states ofSgrA* limited by confusion through the unresolved stellar background. We showthat for 8-10m class telescopes blending effects along the line of sight willresult in artificial compact star-like objects of 0.5-1 mJy that last for about3-4 years. We discuss how the imaging capabilities of GRAVITY at the VLTI,LINC-NIRVANA at the LBT and METIS at the E-ELT will contribute to theinvestigation of the low variability states of SgrA*.

proceedings of spie, the international society for optical engineering/proceedings of spie

Beating the confusion limit: The necessity of high angular resolution  for probing the physics of Sagittarius A* and its environment: Opportunities  for LINC-NIRVANA (LBT), GRAVITY (VLTI) and and METIS (E-ELT)