see: The Origin of Universal Structure: Herbig Haro Strings by Electric Dark Matter Black Hole- Systems.
https://vixra.org/pdf/1904.0599v2.pdf
also: https://bigbang-entanglement.blogspot.com/2017/01/ppairing-dark-matter-black-holes-in.html
and: https://bigbang-entanglement.blogspot.com/2020/02/the-biggest-blunder-in-astrophysics.html
Quotation: "Galaxies form from these initial conditions through the condensation of gas at the centers of a hierarchically aggregating population of quasi-equilibrium dark matter halos (White & Rees, 1978; White & Frenk, 1991)". See: The Aquarius Project: the sub-halos of galactic halos ( V. Springel at al.)
