They are called quasars and they don't behave like the mathematical models of white holes that's what scientists are missing.
If you look further back into space history there is supposedly more quasars but that is because of poor measurement at long distances.
Here's how a quasar actually works in an old galaxy near end mid life so much you get the big rip which is quit a dull looking event. when the big rip happens enough energy is gathered at the other end where there is a younger galaxy and the hole at the center of this galaxy turns more into a black hole as it gives birth further down the hole to a quasar which just spits out the beginnings of a new galaxy a quasar which is slow to start up but when it gets going it gets going.
It is because of this that these holes wobble and are not stable regions that last billions of years yes ladies and gentle man I'm predicting black holes wobble and can spit out energy not just lightly leak radiation and that they just fizzle out and just emerge sometimes along with other types of rips.