Seeding Supermassive Black Holes with Self-interacting Dark Matter: A Unified Scenario with Baryons

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...

Observational Constraints on the Self Interacting Dark Matter Scenario and the Growth of Supermassive Black Holes

We consider the astrophysical consequences of the self interacting dark matter (SIDM) scenario for a general velocity dependent cross section per unit mass which varies as some power of velocity: σDM = σ0 (v/v0) . Accretion of SIDM onto seed black holes can produce supermassive black holes that are too large for certain combinations of σ0v a 0 and a, a fact which is used to obtain a new constra...

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...

Unified origin of baryons and dark matter

We investigate the possibility that both the baryon asymmetry of the universe and the observed cold dark matter density are generated by decays of a heavy scalar field which dominates the universe before nucleosynthesis. Since baryons and cold dark matter have common origin, this mechanism yields a natural explanation of the similarity of the corresponding energy densities. The cosmological mod...