Halo Noise

Mark Fardal, Arif Babul, & Joshua E. Barnes

May 2002

Models of structure formation by gravitational clustering of `cold' dark matter predict that galaxy halos should contain a broad spectrum of substructure. These `subhalos' could perturb galactic disks and heat them to unacceptable levels. The self-consistent response of a dark halo may amplify the perturbations due to subhalos; here we use self-consistent N-body experiments to study this amplification effect and set limits on acceptable levels of halo substructure.

Joshua E. Barnes (barnes@ifa.hawaii.edu)

Last modified: May 8, 2002