Incoherent EM waves is access to the temporal dimension for objects to age and be physical. Decoherence.
EM waves from a black hole is the interface. The electromagnetic field/temporal is made from a black hole.
A black hole generates electromagnetic field with:
Golden ratio * X²⁺ⁿ / Pi = scaling at 0.1%
Dark Matter doesn’t have anything incoherent near it.