Seeding Supermassive Black Holes with Self-interacting Dark Matter: A Unified Scenario with Baryons

@article{Feng2020SeedingSB,
  title={Seeding Supermassive Black Holes with Self-interacting Dark Matter: A Unified Scenario with Baryons},
  author={Wei-Xiang Feng and Hai-Bo Yu and Yi-Ming Zhong},
  journal={The Astrophysical Journal Letters},
  year={2020},
  volume={914}
}
Observations show that supermassive black holes (SMBHs) with a mass of ∼109 M ⊙ exist when the universe is just 6% of its current age. We propose a scenario where a self-interacting dark matter halo experiences gravothermal instability and its central region collapses into a seed black hole. The presence of baryons in protogalaxies could significantly accelerate the gravothermal evolution of the halo and shorten collapse timescales. The central halo could dissipate its angular momentum remnant… 
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