Dynamical Black Hole Growth and the M_{BH}-σRelation

Details Dynamical Black Hole Growth and the M_{BH}-σRelation Dynamical Black Hole Growth and the M_{BH}-σRelation

2002-12-11

arxiv.org/abs/astro-ph/0212278v2

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures; minor editorial changes. To appear in "Carnegie Observatories Astrophysics Series, Vol. 1: Coevolution of

Scientific paper

This poster discusses a possible explanation for the relationship between the mass of the central supermassive black hole and the velocity dispersion in the bulge of the host galaxy. We suppose that the black hole and the dark matter halo are forming simultaneously as matter falls in, and a self-similar system then exists in which the mass and the velocities of the system evolve as power-law functions of time. This leads naturally to a relationship between the black hole mass and the velocities in the halo which, with a reasonable choice of cosmological parameters, is in good agreement with the observed relationship. We also confirm this relationship with more robust numerical results.

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