Part 6/9:
The dynamics of black holes share a striking resemblance to stars in terms of gravitational collapse but manifest most distinctly in accretion discs. When matter spirals toward a black hole, it concentrates and creates a disc, where angular momentum plays a crucial role in determining how efficiently material falls into the black hole.
Interestingly, traditional thin accretion discs resist rapid material infall due to significant angular momentum. This slow feeding mechanism means such configurations seldom achieve speeds beyond the Eddington limit. For a quasar to rapidly consume material and surpass conventional luminosity limits, the structure of the accretion disc and the dynamics involved must drastically change.