A gas cloud was detected within half an arcsecond of Sagittarius A* in 2011 in L'-band and subsequently in line emission of H and He. The emitting cloud can be traced back in time to 2002 and is in an orbit with a pericentre very close to the central massive black hole at the Galactic Centre. Named G2, the cloud is passing the pericentre from mid-2013 to probably mid-2014 and is being intensively monitored by many facilities. An update on the progress of G2 is reported, based on recent VLT observations with SINFONI.
- Pub Date:
- September 2013