Beyond the Bulge: A Fundamental Relation between Supermassive Black Holes and Dark Matter Halos

Beyond the Bulge: a Fundamental Relation between Supermassive Black Holes and Dark Matter Halos

The possibility that the masses M• of supermassive black holes (SBHs) correlate with the total gravitational mass of their host galaxy, or the mass MDM of the dark matter halo in which they presumably formed, is investigated using a sample of 16 spiral and 20 elliptical galaxies. The bulge velocity dispersion σc, typically defined within an aperture of size R < ∼ 0.5 kpc, is found to correlate ...

Dark Matter Accretion into Supermassive Black Holes

Forming supermassive black holes by accreting dark and baryon matter

Given a large-scale mixture of self-interacting dark matter (SIDM) particles and baryon matter distributed in the early Universe, we advance here a two-phase accretion scenario for forming supermassive black holes (SMBHs) with masses around ∼ 109M⊙ at high redshifts z ( > ∼ 6). The first phase is conceived to involve a rapid quasi-spherical and quasi-steady Bondi accretion of mainly SIDM partic...

An Observed Fundamental Plane Relation for Supermassive Black Holes

We study observed correlations between supermassive black hole (BHs) and the properties of their host galaxies, and show that the observations define a BH “fundamental plane” (BHFP), of the form MBH ∝ σ3.0±0.3 R0.43±0.19 e or MBH ∝ M 0.54±0.17 ∗ σ 2.2±0.5, analogous to the FP of elliptical galaxies. The BHFP is preferred over a simple relation between MBH and any of σ, M∗, Mdyn, or Re alone at ...

Supermassive Black Holes from Ultra-strongly Self-interacting Dark Matter

Jason Pollack, ∗ David N. Spergel, and Paul J. Steinhardt 1Walter Burke Institute for Theoretical Physics, Division of Physics, Mathematics & Astronomy, California Institute of Technology, Pasadena, CA 91125 2Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544 3Department of Physics and Princeton Center for Theoretical Science, Princeton University, Prin...