Nuclear Activity and the Conditions of Star-formation at the Galactic Center
August 11, 2017
November 15, 2017
The Galactic Center is the closest galactic nucleus that can be studied with unprecedented angular
resolution and sensitivity. We summarize recent basic observational results on Sagittarius A*
and the conditions for star formation in the central stellar cluster. We cover results from the
radio, infrared, and X-ray domain and include results from simulation as well. From (sub-)mm
and near-infrared variability and near-infrared polarization data we find that the SgrA* system
(supermassive black hole spin, a potential temporary accretion disk and/or outflow) is well ordered
in its geometrical orientation and in its emission process that we assume to reflect the accretion
process onto the supermassive black hole (SMBH).
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