Title:

Dark Matter Substructures and Centers of Elliptical Galaxies



Chung-Pei Ma
UC Berkeley



Abstract:

Much recent discussion about dark matter has been centered
on two seemingly independent problems: the abundance of
substructure in dark matter halos, and the cuspiness of the
halos' inner density profile.  I will discuss how these two
properties of dark matter may be linked dynamically, and how
the dynamics of substructures and satellite galaxies is also
relevant for the core-cusp dichotomy of the central
properties of elliptical galaxies.