Seeds don’t sink: even massive black hole ‘seeds’ cannot migrate to galaxy centres efficiently

@article{Ma2021SeedsDS,
  title={Seeds don’t sink: even massive black hole ‘seeds’ cannot migrate to galaxy centres efficiently},
  author={Linhao Ma and Philip F. Hopkins and Xiangcheng Ma and Daniel Angl{\'e}s-Alc{\'a}zar and Claude-Andr{\'e} Faucher-Gigu{\`e}re and Luke Zoltan Kelley},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
Possible formation scenarios of supermassive black holes (BHs) in the early universe include rapid growth from less massive seed BHs via super-Eddington accretion or runaway mergers, yet both of these scenarios would require seed BHs to efficiently sink to and be trapped in the Galactic Centre via dynamical friction. This may not be true for their complicated dynamics in clumpy high-z galaxies. In this work, we study this ‘sinking problem’ with state-of-the-art high-resolution cosmological… 
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