see: https://www.csmonitor.com/Science/2016/0413/Strange-alignment-A-group-of-black-holes-points-to-galaxies-beginnings
based on the new BH paradigm of Quantum FFF Theory.
Which assume that equal sized BHs are able to keep distance from each other by plasma propulsion in between them forming a "Bar"
In the middle stars (open star clusters) will form in a sort of pressure cooker. see:
Dual Solar Anchor Black Holes or Herbig Haro hotspots, the origin of quick star formation.
http://vixra.org/pdf/1709.0396v3.pdf
