A Fundamental Relation between Supermassive Black Holes and Their Host Galaxies

@article{Ferrarese2000AFR,
  title={A Fundamental Relation between Supermassive Black Holes and Their Host Galaxies},
  author={Laura Ferrarese and David Merritt},
  journal={The Astrophysical Journal Letters},
  year={2000},
  volume={539},
  pages={L9 - L12}
}
The masses of supermassive black holes correlate almost perfectly with the velocity dispersions of their host bulges, Mbh ∝ σα, where α = 4.8 ± 0.5. The relation is much tighter than the relation between Mbh and bulge luminosity, with a scatter no larger than expected on the basis of measurement error alone. Black hole masses recently estimated by Magorrian et al. lie systematically above the Mbh-σ relation defined by more accurate mass estimates, some by as much as 2 orders of magnitude. The… 

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TLDR
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