IS THERE A MAXIMUM MASS FOR BLACK HOLES IN GALACTIC NUCLEI

@article{Inayoshi2016ISTA,
  title={IS THERE A MAXIMUM MASS FOR BLACK HOLES IN GALACTIC NUCLEI},
  author={Kohei Inayoshi and Zolt{\'a}n Haiman},
  journal={The Astrophysical Journal},
  year={2016},
  volume={828},
  pages={110}
}
The largest observed supermassive black holes (SMBHs) have a mass of M_BH ~ 10^{10} M_sun, nearly independent of redshift, from the local (z~0) to the early (z>6) Universe. We suggest that the growth of SMBHs above a few 10^{10} M_sun is prevented by small-scale accretion physics, independent of the properties of their host galaxies or of cosmology. Growing more massive BHs requires a gas supply rate from galactic scales onto a nuclear region as high as >10^3 M_sun/yr. At such a high accretion… 

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