Self-interacting dark matter with particle mass m ≳ 0.01 eV drives universal super-Eddington Bondi accretion that grows 10 solar-mass primordial black holes into 10^9-10^10 solar-mass supermassive black holes by z~7.
This can also be understood as resistance to collapse under high pressure, leading to slower accretion
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A Unified Dark-Matter--Driven Relativistic Bondi Route to Black-Hole Growth from Stellar to Supermassive Scales
Self-interacting dark matter with particle mass m ≳ 0.01 eV drives universal super-Eddington Bondi accretion that grows 10 solar-mass primordial black holes into 10^9-10^10 solar-mass supermassive black holes by z~7.