Primordial Black Holes Could Have Triggered the Formation of Supermassive Black Holes - by BrianKoberlein
Primordial black holes could have pulled matter toward it to trigger stellar formation, but matter consumed by a black hole also heats nearby gas, causing it to push away. So primordial black holes turn out to have a give-and-take effect. Attracting matter into galactic clouds gravitationally, but also heating the central region and hindering star production. So primordial black holes don’t play a conclusive role. The effects of seeding and heating almost cancel each other out.
Simulations show how varying numbers of primordial black holes affect galaxy formation. Credit: Liu, et al Of course, things can change significantly with the introduction of dark matter. Dark matter is attracted to a black hole gravitationally but doesn’t heat nearby material the way regular matter does. Primordial black holes and dark matter could have worked together in a way that overpowers any heating from the primordial black holes. If that’s the case, the interaction of dark matter and primordial black holes could have created gravitational waves.
These detailed simulations show just how subtle and complex the role of primordial black holes can be. As the team moves toward creating even more detailed simulations, they hope to see how dark matter, primordial black holes, and star production might lead to the formation of supermassive black holes. In time they might be able to tell us how such big objects have such small beginnings.
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