Self-interacting dark matter and the delay of supermassive black hole growth

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

Self-Interacting Dark Matter

Spergel and Steinhardt have recently proposed the concept of dark matter with strong self-interactions as a means to address numerous discrepancies between observations of dark matter halos on subgalactic scales and the predictions of the standard collisionless dark matter picture. We review the motivations for this scenario and discuss some recent, successful numerical tests. We also discuss t...

LISA Observations of Supermassive Black Hole Growth

Based on a high resolution cosmological n-body simulation, we track the hierarchical growth of black holes in galaxy clusters from z = 20 to z = 0. We present a census of black holes as function of redshift and will determine their mass assembly history under a variety of assumptions regarding the importance of gas accretion in black hole growth, from early supercritical Eddington accretion to ...