Collisional Dark Matter and the Origin of Massive Black Holes

Details Collisional Dark Matter and the Origin of Massive Black Holes Collisional Dark Matter and the Origin of Massive Black Holes

1999-12-29

arxiv.org/abs/astro-ph/9912548v2

Phys.Rev.Lett.84:5258-5260,2000

Astronomy and Astrophysics

Astrophysics

7 pages, no figures, LaTeX2e, Accepted for publication in Phys. Rev. Lett. Changed content

Scientific paper

10.1103/PhysRevLett.84.5258

If the cosmological dark matter is primarily in the form of an elementary particle which has cross section and mass for self-interaction having a ratio similar to that of ordinary nuclear matter, then seed black holes (formed in stellar collapse) will grow in a Hubble time, due to accretion of the dark matter, to a mass range 10^6 - 10^9 solar masses. Furthermore, the dependence of the final black hole mass on the galaxy velocity dispersion will be approximately as observed and the growth rate will show a time dependence consistent with observations. Other astrophysical consequences of collisional dark matter and tests of the idea are noted.

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