According to Q-FFF Theory, the Crab Nebula seems to be a good example of the postulated Dual micro Dark Matter Black Hole Herbig Haro systems including the new Penrose -Q-FFF Black hole design.
Below: Dense Molecular Clouds in the Crab Supernova Remnant.
https://www.researchgate.net/publication/358114636_Dense_Molecular_Clouds_in_the_Crab_Supernova_Remnant
January 2022The Astrophysical Journal 925(1):59
Alwyn WoottenAlwyn WoottenRory O. BentleyJ. BaldwinShow all 10 authorsA. Castro-Carrizo
The Q-FFF Rigid String Theory says: (1) There is only one CONSTRUCTIVE Topological and Resilient TRANSFORMING STRING (Axion/vacuum Dark Energy building block ), forming direct after the Black Hole Splitting Big Bang. so called Travelling TADPOLE Black Hole based Filaments, expanding the Cosmic Lyman Alpha Structure. (2) A Raspberry Entangled 12x Mirror Copy Multiverse is Postulated as base for uncertainty (ER=EPR) and Libet's FREE VETO WILL . SO We live inside an exploded BH