New discovery by Australian scientists radically challenges our understanding of gas conditions in the Milky Way
However not all sizes of black holes can have the same Hazelnut lensing effect.
Conclusion this research could be the start of the discrimination between the sizes of BHs related to their function as Herbig Haro bowshock BHs etc. and a recently proposed Plasma creation out of the Higgs vacuum or a so called secondary inflation of the universe.
(See Bok globules below)