Is dark energy the outflow of dark matter from a universal black hole?
Is our visible Universe in a larger version of the following?
Black holes banish matter into cosmic voids
Is the energy described above at the scale of a Universal black hole dark energy?
Our being in the outflow of a Universal black hole would explain the following directionality.
New evidence for a preferred direction in spacetime challenges the cosmological principle
Black holes banish matter into cosmic voids
Some of the matter falling towards the [supermassive black] holes is converted into energy. This energy is delivered to the surrounding gas, and leads to large outflows of matter, which stretch for hundreds of thousands of light years from the black holes, reaching far beyond the extent of their host galaxies.
Is the energy described above at the scale of a Universal black hole dark energy?
Our being in the outflow of a Universal black hole would explain the following directionality.
New evidence for a preferred direction in spacetime challenges the cosmological principle
Comments (22)
Whatever dark energy is, it would have to be distributed absolutely evenly across every point of space (to match with the astronomical observations that identified its existence as a faint repulsive pressure present in the fabric of the void itself).
Our being in the outflow of a Universal black hole would explain the following directionality.
New evidence for a preferred direction in spacetime challenges the cosmological principle
Note: also added above to original comment
Low multipoles and other anomalies
Sorry to be harsh, but the title of your OP suggests some half-baked thinking.
"Is dark energy the outflow of dark matter from a universal black hole?"
You might need to refine your terms. What is this dark matter such that its outflow would cause a general cosmic acceleration rather than a localised gravitational deceleration?
If it is powerful enough to account for "70% of the missing mass", why does its flow from one place to another create such a remarkably insignificant cosmic anisotropy?
What is a universal black hole here? Supermassive black holes are located in places within the universe. It sounds as you may be wanting to make some kind of "we are trapped inside a white hole" story that explains cosmic dark energy acceleration ... with a faint anisotropy. But why would that generalised hole even have an anisotropy?
If you can put all the bits of the puzzle together, that would be interesting. So far I'm not seeing a well-motivated thought at the back of your OP.
I'd be happy enough to be proved wrong, of course.
It just spreads the gravitating mass about. It doesn't create a new generalised source of "antigravity".
And there is no reason to think it would create an anisotropy. Why would these supermassive blackholes be distributed in a non-random fashion? What extra factor are you claiming would be in play?
Again, I don't see the dots being connected. You would have to provide the motivating argument.
Now it is also quite possible that a belief in dark energy is wrong. It is merely an optical effect - http://www.canterbury.ac.nz/news/2017/uc-cosmologists-reframe-dark-energy-debate-with-new-supernova-study.html
But of course we do have a missing mass problem. And more than that, dark energy ensures the Universe - being apparently so evenly balanced - could defeat the prospect of a gravitational collapse. So - like inflation - it is a useful idea to be true.
You seem to be headed towards a hypothesis that creates more problems than it would solve. So there would have to be good evidence of an actual anisotropy to want to go there.
Just saying. Physics would accept weaker evidence for an effect that reduces complexity - like dark energy or inflation - than for an effect that would increase it.
Hence you have to provide a good motivation for why the way you are heading would simplify anything for cosmology.
It seems to me that you have run out on thin ice covering cold deep water. It won't turn out well. I suggest (a la cartoon) that you circle back to solidly frozen land without stopping to look down--at which point you would plunge into the icy deep
All of our visible universe exists in the outflow of the Universal black hole.
And you still haven’t said why the dark matter outflow would be seen as a generalised acceleration rather than a generalised deceleration. Are you suggesting dark matter has antigravity?
Our visible universe is in a larger version of the following outflow:
Our Universe looks like the following:
When the circumference is reduced to the center, where everything is tethered to, well....you won't be running around like a dog on a leash along predictable circles.
The title asks, "Is dark energy the outflow of dark matter from a universal black hole?"
No, that wouldn't be right. Despite the term "dark" appearing in both terms, dark energy and dark matter don't have anything to do with one another. Dark matter is just a form of matter that is non-baryonic and that doesn't interact with electromagnetic radiation (because of this, it behaves very differently: it doesn't clump, for instance, because most clumping mechanisms depend on radiating energy away).
Dark energy is a negative pressure (meaning it is repulsive): it has a negative equation of state (probably exactly -1, if it is a cosmological constant -- but we have only constrained it to <-0.6). If the universe is imagined to be like a fluid (an assumption that is apt), then there has to exist some kind of negative pressure in order to get a universe that looks like the one that we see. We just call that negative pressure "dark energy."
(I'm trying to keep this within layman's terms, but for the more adventurous: we observe a universe that is isometric and homogeneous at scales above a few hundred Mpc but which is also apparently asymptotically flat. If we add up all of the energy densities of radiation, baryonic matter, and dark matter, we should see a universe that is not flat: in order to get a universe that's flat like the one that we see, there must exist an energy density with a negative equation of state. That's dark energy.)
Welcome to TPF.
Welcome aboard. There are several physicists on TPF but they like to cloak themselves in dark matter. :cool:
Welcome to the Philosophy Forum, where science goes to die. Or, alternatively, where bad science goes after it gets kicked off actual science forums. It's nice to read a clear, knowledgeable explanation of a genuine scientific topic.
Thanks for your welcomes!
Well, I will try to keep the science a little more sane around here then (I know how it goes, I've been posting on a couple of other philosophy forums as well). At least whenever it falls within my purview anyway!
Accompanied by its handmaiden mathematics. :roll: