Comment by tromp
1 day ago
https://en.wikipedia.org/wiki/List_of_most_massive_black_hol... shows the maximal theoretical limit as 270B solar masses.
1 day ago
https://en.wikipedia.org/wiki/List_of_most_massive_black_hol... shows the maximal theoretical limit as 270B solar masses.
To expand on this, as stated in your source:
> [270B solar masses] is the maximum mass of a black hole that models predict, at least for luminous accreting SMBHs.
as well as:
> The limit is only 5×10^10 M [50B solar masses] for black holes with typical properties, but can reach 2.7×10^11 M [270B solar masses] at maximal prograde spin (a = 1).
However in the chapter before, it's stated:
> New discoveries suggest that many black holes, dubbed 'stupendously large', may exceed 100 billion or even 1 trillion M.
There's a theory that the universe we live in is itself inside a giant black hole. No idea how it is supposed to have gotten so biig.
If you assume constant density, anything becomes a black hole at certain volume. The question is: is our universe big enough to be a black hole or not.
It couldn't have, the theory is nonsense.
8 replies →
> giant
How would we know the size? Relative to what?
So what happens if two such black holes collide?
Can black holes even collide? I guess their horizons can merge somehow... Probably a spectacular show.
Disclaimer: This is my own work
https://www.youtube.com/watch?v=doS85Mh78Vc
This is what they look like when they merge, its pretty darn cool
That’s precisely what LIGO measures, the gravitational waves from black hole mergers (or neutron star mergers, etc).
1 reply →
I love to contemplate galactic-scale synchrotrons that accelerate supermassive charged black holes to collide at relativistic speeds. The thought never really goes anywhere, but I'm sure it'd be a spectacle to behold.
1 reply →
That could be a good question for AI to answer.