Did Supermassive Black Holes Form Directly From Dark Matter?

The workings of the Universe.
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fred8615
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Did Supermassive Black Holes Form Directly From Dark Matter?

Post by fred8615 »

Supermassive black holes are just a little bit too supermassive – astronomers have difficulty explaining how they got so big so quickly in the early universe. So maybe it’s time for a new idea: perhaps giant black holes formed directly from dark matter.

The biggest black holes in the universe are frighteningly big, topping out at over a hundred billion times more massive than the sun. To make things even more frightening, we see these kinds of monsters very early in the history of the universe, when our cosmos was only 800 million years old.

This presents a bit of a challenge, since the only way we know how to make black holes is for giant stars to die. Then, those small black holes (usually only a few times more massive than the sun) need to grow, either by feeding on surrounding material or merging with other black holes.

That’s fine, but for the supermassive black holes to appear so early, it means that these processes have to go unnervingly fast after the formation of the first stars – perhaps too fast.

But what the early universe lacked in stars it more than made up for in dark matter, the mysterious substance that makes up 85% of all the mass in the universe.

Read more: https://www.universetoday.com/150432/di ... rk-matter/
Frederick J. Barnett
"Someone's got to take the responsibility if the job's going to get done!! Do you think that's easy?!" Gregory Peck - The Guns Of Navarone
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