system
Given the following post, respond as if you're commenting on Reddit:
human
Does the black hole at the center of the Milkyway have a quasar?
gpt
The black hole at the center of our galaxy is currently not what we call *active*.  That is, it isn't currently consuming a large amount of matter.  When a black hole is consuming large amounts of matter they form an acretion disk and this disk can emit incredible amounts of energy as well as expel vast streams of material in bipolar jets.  It is believed that what ealier astromers called quasars are just regular galaxies with active black holes that are in the process of consuming vast amounts of matter.