How did direct collapsing black holes form so early in the universe?

In summary, black holes are able to form and grow to large sizes in the early universe due to the direct collapse scenario. Unlike stars, which have a mass constraint, black holes can reach millions of solar masses due to initial density fluctuations. This process bypasses the stellar evolution phase, giving them more time to grow. The high density of the early universe also plays a role in the rapid formation of these massive black holes.
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wolram
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How are thees black holes formed so early in the universe, weighing millions of suns after only 1 billion years after the big bang?
 
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It is much easier for black holes to grow to great sizes via accretion and mergers under the direct collapse scenario. A DCBH seed is not mass constrained the same way as a star - which cannot exceed a few hundref M-solar under any existing stellar evolution model. They are only limited by the size of initial density fluctuations in the early universe - which could be millions of solar masses. It also bypasses the entire stellar evolution phase giving them more time to bulk up compared to a stellar mass BH. Keep in mind the early universe was much denser than now, so this could be a significant factor.
 

1. What is a direct collapsing black hole?

A direct collapsing black hole is a theoretical type of black hole that is formed from the direct collapse of a massive gas cloud. This type of black hole is different from other black holes, such as stellar black holes, which are formed from the collapse of a dying star.

2. How is a direct collapsing black hole formed?

A direct collapsing black hole is formed when a large amount of gas, typically hydrogen, begins to collapse under its own gravity. As the gas collapses, it heats up and forms a hot, dense core. This core eventually becomes so dense that it collapses into a black hole, rather than forming a star like in the case of a stellar black hole.

3. Can direct collapsing black holes be observed?

Currently, there is no direct evidence for the existence of direct collapsing black holes. However, scientists are actively searching for them using various techniques, such as studying the properties of massive gas clouds and observing the light emitted from them.

4. What makes direct collapsing black holes unique?

Direct collapsing black holes are unique in that they are thought to be much larger and more massive than other types of black holes. They are also thought to be younger, as they are formed from the collapse of gas clouds in the early universe.

5. What is the significance of studying direct collapsing black holes?

Studying direct collapsing black holes can provide valuable information about the early universe and the formation of galaxies and other structures. It can also help us better understand the properties and behavior of black holes in general, which are still not fully understood by scientists.

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