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Fri Dec 18, 2020, 07:21 AM

Somehow, a Monstrous Supermassive Black Hole Has Gone Missing


MICHELLE STARR18 DECEMBER 2020

The Universe is full of galaxy clusters, but Abell 2261 is in a class of its own. In the galaxy in the centre of the cluster, where there should be one of the biggest supermassive black holes in the Universe, astronomers have been able to find no trace of such an object.

And a new search has only made the absence more puzzling: if the supermassive black hole got yeeted out into space, it should have left evidence of its passage. But there's no sign of it in the material surrounding the galactic centre, either.

But this means that constraints can be placed on what the supermassive black hole - if it is there, evading detection - is doing.

Galaxy clusters are the largest known gravitationally bound structures in the Universe. Typically, they're groups of hundreds to thousands of galaxies that are bound together, with one huge, abnormally bright galaxy at or close the centre, known as the brightest cluster galaxy (BCG).

But even among BCGs, Abell 2261's BCG (named, in fact, A2261-BCG, and located about 2.7 billion light-years away) stands out. It's about a million light-years across - up to to 10 times the size of the Milky Way galaxy - and it has a huge, puffy core 10,000 light-years across, the largest galactic core ever seen.

More:
https://www.sciencealert.com/somehow-a-colossal-supermassive-black-hole-is-missing-in-action

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Reply Somehow, a Monstrous Supermassive Black Hole Has Gone Missing (Original post)
Judi Lynn Dec 2020 OP
LunaSea Dec 2020 #1
Shermann Dec 2020 #4
3Hotdogs Dec 2020 #2
BComplex Dec 2020 #3
Irish_Dem Dec 2020 #5
intheflow Dec 2020 #6

Response to Judi Lynn (Original post)

Fri Dec 18, 2020, 07:37 AM

1. "Yeeted into space"

That's worth a rec by itself.....

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Response to LunaSea (Reply #1)

Fri Dec 18, 2020, 09:30 AM

4. I like galaxies which didn't have their black hole yeeted into space nt

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Response to Judi Lynn (Original post)

Fri Dec 18, 2020, 08:53 AM

2. Goddam Farengi.

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Response to Judi Lynn (Original post)

Fri Dec 18, 2020, 09:20 AM

3. That's almost too big to wrap your mind around.

2.7 BILLION light-years away? A MILLION light-years across?

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Response to Judi Lynn (Original post)

Fri Dec 18, 2020, 10:19 AM

5. That's what happens when you don't wear a mask. nt

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Response to Judi Lynn (Original post)

Fri Dec 18, 2020, 10:58 AM

6. Obviously, it a stable wormhole.

Someone call The Sisko to be filled in on the deets.

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