Circumnuclear disc:
The circumnuclear disc (CND) orbiting the Galaxy’s central black hole is a reservoir of material that can ultimately provide energy through accretion, or form stars in the presence of the black hole, as evidenced by the stellar cluster that is presently located at the CND’s centre.
Noted in “We finally found the hot wind coming out of our black hole,” Alex Wilkins, NewScientist (4 October 2025, paywall):
These winds, however, have never been conclusively detected in Sgr A* [the black hole at the center of the Milky Way], despite being predicted since the 1970s. This is partly because it is so difficult to observe the region around our galaxy’s black hole, a tightly packed melange of stars, dust and gas called the circumnuclear disc (CND).
