"When a large volume of gas falls towards the super massive black hole in the center of a galaxy, it collides with other gas and is heated to extreme temperatures."
In the universe there is no up and down. The same rules apply to the North or South Pole. Gathering = Movement. Why would the "downfall" be an extremely hot process? Why, this is not true for the movement? What heats the gas, in the author, gas furnace?Happy is he who does not think.
So spaceship that goes to the "black hole", becomes hot, 15,000 ly before entering into a black hole? The diameter of the center of the galaxy is ~ 30,000 ly from the north to the south pole.

In the universe there is no up and down.

But objects can still fall onto more massive objects.

Or, if you're close to an object with enough mass, every direction leads to 'down'.

Your statement: down = south and north pole, equator and every other point. How, you, distinguish the south and north poles (both are down). What is south and what is north?

That's interesting. Two ways:

First, why do quasars not show up in very many protoclusters?

Second, why, when they show up in protoclusters, are there two?

Still, the sample size is small so far. As this project continues we should get more data. If these trends keep up, this could be a big clue to galaxy dynamics.

".. But, when a cyclone, with a diameter of 1000 km or more, makes a turn in a second, the strong forces are created, which by the particles' friction create a light effect. A cyclone is a spiral thread, up to 30 000 of light years in length. The larger the speed of a cyclone, the stronger the friction inside the eye is. Also, the more intensive is the glow and more significant are different kinds of radiation. A visible trace that is related to the released matter is only the thrust of radiation waves from the eye of a cyclone on the gas and matter that exist outside of that event. .." http://www.svemir...html#14b

...
First, why do quasars not show up in very many proto-clusters?

Small sample. And it is a matter of enough time to grow sufficiently internally. See a newly forming quasar in my first post.

https://phys.org/...ars.html

The growing core seen by Spitzer is dissipating the surrounding galaxy. And daughter galaxies are diverging therefrom. Eventually, all that will left is the bare growing core, a quasar.

Second, why, when they show up in protoclusters, are there two?

Because regions of high mass density provide the sub-quantum fertile conditions for more rapid formation of new matter, growing surrounding stars more rapidly. Hence, more likely a second rapid quasar forms.

Still, the sample size is small so far. As this project continues we should get more data. If these trends keep up, this could be a big clue to galaxy dynamics.

It already has, to those with a bit of logic. Sorry maniacs. You will never win.

...The ability of black holes to swallow gas is actually quite limited: the faster the gas is falling, the more radiation gets generated in accretion disk, the more gas gets blow out by radiational pressure.

This is an unstable feedback system, leading to a collapse of the very mechanism by which the intellectually challenged merger maniacs cling to as an explanation. Such a system has a very limited lifespan, so that the extremely luminous systems that we actually observe should be at best, very rare. But the maniacs still cling, since they got nothing!