In an article today concerning the discovery of "Middle-weight Black Holes" it is mentioned that 47 Tuc is the home of this black hole.
"The discovery was announced today in the journal Nature, revealing the black hole hid at the centre of the 12-billion-year-old globular 47 Tucanae star cluster."
http://www.abc.net.au/news/2017-02-0...t-says/8253468
I must admit I had never associated black holes with clusters, thinking of them more as galaxy engines.
