An upper limit to the size of black holes?

AI Thread Summary
The discussion explores the idea of an upper limit to black hole size, suggesting that if supermassive black holes merge, they could reach a state where matter cannot exist. This scenario raises questions about what happens to the matter in such a black hole, proposing that it could convert entirely into energy, potentially leading to a big bang-like explosion. The conversation emphasizes the extreme conditions within black holes, particularly at the singularity, where traditional matter ceases to exist. The concept challenges participants to consider the implications of such extreme states and their effects on the surrounding universe. Engaging with this theory encourages creative thinking about the nature of black holes and cosmic events.
bkelly
Messages
101
Reaction score
1
In an earlier post I make the controversial suggestion that the universe was very heterogeneous in the early stages. I have another conjecture that goes along with that one.

Please try to read this with a bit of an open mind.

Imagine that there is an upper limit to the size of a black hole. Presume that the supermassive black hole in a galaxy eventually consumed most or all of the matter in the galaxy. Think of what might happen when a couple million of these super massive black holes combine. Might there be a point where the conditions inside the black hole are so extreme that matter cannot exist in any form?

If a black hole reached that state, what would happen? If the matter simply cannot exist, then what does it do?

One possibility might be that it would translate into energy. Over some relatively small amount of time, all, or maybe most of the matter energy in this black hole would translate into energy. Now there is no longer any matter to bend space. What once was a black hole is now a huge amount of energy in a relatively very small space. Effectively a big bang.

Back to my earlier post: If that black hole did not contain “all” the matter of the universe, then the matter around it would disturb any homogeneity of the explosion. Maybe the explosion would cause some, most, or some number of the nearby black holes to burst or rupture suddenly releasing their matter.

Before shooting me down, take a minute to play around with this concept. Think of it as a fun exercise and see what you might come up with.
 
Space news on Phys.org
bkelly said:
Might there be a point where the conditions inside the black hole are so extreme that matter cannot exist in any form?

In any black hole, conditions are so extreme that matter cannot exist in any form. That's what the singularity is.

Please review PF's rules https://www.physicsforums.com/showthread.php?t=414380 on overly speculative posts.
 
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
Why was the Hubble constant assumed to be decreasing and slowing down (decelerating) the expansion rate of the Universe, while at the same time Dark Energy is presumably accelerating the expansion? And to thicken the plot. recent news from NASA indicates that the Hubble constant is now increasing. Can you clarify this enigma? Also., if the Hubble constant eventually decreases, why is there a lower limit to its value?
Back
Top