Black holes and galaxies formations.
-----
" . . . supermassive black holes with the mass of millions or billions of Suns are assumed
to reside in the cores of most galaxies, and they play a key role in current models
of how galaxies have formed over the past billions of years."
Correct.
Galaxies formations can have their source "black holes".
Why?
1- "A black hole of one solar mass (M☉) has a temperature of only 60 nanokelvins
(60 billionths of a kelvin) Hawking radiation" / Wikipedia /
2- A black hole has a temperature within a few millionths
of a degree above absolute zero / Oxford. Dictionary./
3- "Stellar black holes are very cold: they have a temperature of nearly absolute zero –
which is zero Kelvin, or −273.15 degrees Celsius. Supermassive black holes are even colder."
My conclusion:
The cold and infinite cosmic vacuum has the same temperature as black holes.
It means that so-called "black holes" are only parts of the infinite cosmic vacuum.
So-called "black hole" is other name of the cosmic vacuum.
And as was said " . . . they play a key role in current models of how galaxies have formed
over the past billions of years." as a process of quantum gravity going on for billions of years.
------
-----
" . . . supermassive black holes with the mass of millions or billions of Suns are assumed
to reside in the cores of most galaxies, and they play a key role in current models
of how galaxies have formed over the past billions of years."
Introduction to general relativity - Wikipedia
en.wikipedia.org
Galaxies formations can have their source "black holes".
Why?
1- "A black hole of one solar mass (M☉) has a temperature of only 60 nanokelvins
(60 billionths of a kelvin) Hawking radiation" / Wikipedia /
2- A black hole has a temperature within a few millionths
of a degree above absolute zero / Oxford. Dictionary./
3- "Stellar black holes are very cold: they have a temperature of nearly absolute zero –
which is zero Kelvin, or −273.15 degrees Celsius. Supermassive black holes are even colder."
Fact sheet: Black hole
One of these massive, mysterious objects lurks at the heart of our own galaxy.
www.asc-csa.gc.ca
The cold and infinite cosmic vacuum has the same temperature as black holes.
It means that so-called "black holes" are only parts of the infinite cosmic vacuum.
So-called "black hole" is other name of the cosmic vacuum.
And as was said " . . . they play a key role in current models of how galaxies have formed
over the past billions of years." as a process of quantum gravity going on for billions of years.
------