5 ms·

https://en.wikipedia.org/wiki/List_of_most_massive_black_holes https://en.wikipedia.org/wiki/List_of_most_massive_black_hol... shows the maximal theoretical lim

by tromp 1y ago

https://en.wikipedia.org/wiki/List_of_most_massive_black_holes https://en.wikipedia.org/wiki/List_of_most_massive_black_hol... shows the maximal theoretical limit as 270B solar masses.

BurningFrog 1y ago
So what happens if two such black holes collide?
- msk-lywenn 1y ago
  Can black holes even collide? I guess their horizons can merge somehow... Probably a spectacular show.
  - ryandamm 1y ago
    That’s precisely what LIGO measures, the gravitational waves from black hole mergers (or neutron star mergers, etc).
    - bookofjoe 1y ago
      >Cosmic Heavyweights Collide – LIGO Detects Largest, Fastest-Spinning Black Holes Yet https://scitechdaily.com/cosmic-heavyweights-collide-ligo-detects-largest-fastest-spinning-black-holes-yet/ https://scitechdaily.com/cosmic-heavyweights-collide-ligo-de...
  - 20k 1y ago
    Disclaimer: This is my own work https://www.youtube.com/watch?v=doS85Mh78Vc https://www.youtube.com/watch?v=doS85Mh78Vc This is what they look like when they merge, its pretty darn cool
  - boothby 1y ago
    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.
    - jfengel 1y ago
      It would be just about the only way we could get the data required to resolve the contradictions between the Standard Model and general relativity. The unification energy is simply stupendous.
- mattfrommars 1y ago
  That could be a good question for AI to answer.
  - deleted 1y ago
    [deleted]
kataklasm 1y 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.
- throwaway81523 1y ago
  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.
  - mr_mitm 1y ago
    It couldn't have, the theory is nonsense.
    - floxy 1y ago
      https://en.wikipedia.org/wiki/Black_hole_cosmology https://en.wikipedia.org/wiki/Black_hole_cosmology
      - mr_mitm 1y ago
        I know this article. It's citing a bunch of speculative hypothesis by mostly this one person which relies on something super exotic called Einstein Cartan theory. I stand by my statement. I even suspect the article was written by them.
    - throwaway81523 1y ago
      https://www.scientificamerican.com/article/do-we-live-inside-a-black-hole/ https://www.scientificamerican.com/article/do-we-live-inside...

by tromp 1y ago

https://en.wikipedia.org/wiki/List_of_most_massive_black_holes https://en.wikipedia.org/wiki/List_of_most_massive_black_hol... shows the maximal theoretical limit as 270B solar masses.

BurningFrog 1y ago

So what happens if two such black holes collide?

msk-lywenn 1y ago
Can black holes even collide? I guess their horizons can merge somehow... Probably a spectacular show.
- ryandamm 1y ago
  That’s precisely what LIGO measures, the gravitational waves from black hole mergers (or neutron star mergers, etc).
  - bookofjoe 1y ago
    >Cosmic Heavyweights Collide – LIGO Detects Largest, Fastest-Spinning Black Holes Yet https://scitechdaily.com/cosmic-heavyweights-collide-ligo-detects-largest-fastest-spinning-black-holes-yet/ https://scitechdaily.com/cosmic-heavyweights-collide-ligo-de...
- 20k 1y ago
  Disclaimer: This is my own work https://www.youtube.com/watch?v=doS85Mh78Vc https://www.youtube.com/watch?v=doS85Mh78Vc This is what they look like when they merge, its pretty darn cool
- boothby 1y ago
  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.
  - jfengel 1y ago
    It would be just about the only way we could get the data required to resolve the contradictions between the Standard Model and general relativity. The unification energy is simply stupendous.
mattfrommars 1y ago
That could be a good question for AI to answer.
- deleted 1y ago
  [deleted]

kataklasm 1y 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.

throwaway81523 1y ago
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.
- mr_mitm 1y ago
  It couldn't have, the theory is nonsense.
  - floxy 1y ago
    https://en.wikipedia.org/wiki/Black_hole_cosmology https://en.wikipedia.org/wiki/Black_hole_cosmology
    - mr_mitm 1y ago
      I know this article. It's citing a bunch of speculative hypothesis by mostly this one person which relies on something super exotic called Einstein Cartan theory. I stand by my statement. I even suspect the article was written by them.
  - throwaway81523 1y ago
    https://www.scientificamerican.com/article/do-we-live-inside-a-black-hole/ https://www.scientificamerican.com/article/do-we-live-inside...