Comment by kataklasm
1 day ago
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.
https://en.wikipedia.org/wiki/Black_hole_cosmology
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https://www.scientificamerican.com/article/do-we-live-inside...
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You have elsewhere in this thread objected to people providing links without giving context, so I hope you won't mind being asked to unpack this claim a little. Why is it nonsense? If, as you say, it's principally pushed by one person, who is that, and why does that argue against it?
(I'm not thinking this is too much to ask; saying it's wrong might require empirical support, but the claim that it's "nonsense" should be easier to justify.)
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> giant
How would we know the size? Relative to what?