A: see: Giant radio bubbles spew from near the Milky Way’s central black hole
https://www.sciencenews.org/article/radio-wave-bubbles-milky-way-black-hole
see also:
B: Preference for Dual Herbig Haro Black Hole Consumption by the Central MW Black Hole, Leaving Plasma Jets Behind.
http://vixra.org/pdf/1807.0437v1.pdf
and:
C: Equal Sized New Physics Black Holes Do Not Merge but, Form Herbig Haro Systems.
see: http://vixra.org/pdf/1812.0228v2.pdf