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

  • Context: High School 
  • Thread starter Thread starter wolram
  • Start date Start date
  • Tags Tags
    Black hole Hole
Click For Summary
SUMMARY

Direct collapsing black holes (DCBH) formed shortly after the Big Bang, potentially weighing millions of solar masses just 1 billion years post-event. Unlike traditional stellar black holes, which are limited by stellar evolution models, DCBHs are not mass constrained and can grow significantly through accretion and mergers. Their formation is influenced by the initial density fluctuations in the early universe, which were much greater than present conditions, allowing for the rapid accumulation of mass.

PREREQUISITES
  • Understanding of direct collapsing black holes (DCBH)
  • Knowledge of black hole formation mechanisms
  • Familiarity with the Big Bang theory
  • Concepts of density fluctuations in cosmology
NEXT STEPS
  • Research the mechanisms of black hole accretion and mergers
  • Study the implications of density fluctuations in the early universe
  • Explore the differences between stellar black holes and direct collapsing black holes
  • Investigate the role of the early universe's density in cosmic structure formation
USEFUL FOR

Astronomers, astrophysicists, and cosmologists interested in black hole formation and the early universe's conditions.

wolram
Gold Member
Dearly Missed
Messages
4,410
Reaction score
551
How are thees black holes formed so early in the universe, weighing millions of suns after only 1 billion years after the big bang?
 
Astronomy news on Phys.org
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.
 

Similar threads

Undergrad Early Universe massive Black Holes question
  • · Replies 10 ·
Replies
10
Views
3K
High School I Need Help on Understanding Some Basic Astrophysics / Sand Clock Universe
  • · Replies 5 ·
Replies
5
Views
3K
High School Analogue Black Holes: Disposal?
  • · Replies 2 ·
Replies
2
Views
2K
High School Question regarding supermassive black holes in the early Universe
  • · Replies 1 ·
Replies
1
Views
2K
High School How Can Black Holes Vary in Size if They Are Singularities?
  • · Replies 20 ·
Replies
20
Views
3K
High School Ultramassive Black Hole (UMB), 30 billion solar masses?
  • · Replies 4 ·
Replies
4
Views
3K
High School How black hole Sgr-A* Was Found
  • · Replies 1 ·
Replies
1
Views
2K
High School Circumgalactic Black hole imaged by the Hubble Space Telescope
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad The initial density of an object and its compression into a black hole
  • · Replies 17 ·
Replies
17
Views
5K
High School How would physics change if Planet 9 were a primordial black hole?
  • · Replies 3 ·
Replies
3
Views
2K