Re-Examining Astrophysical Constraints on the Dark Matter Model
Alyson Brooks (Rutgers) - December 15, 2014 at 12:10 pm
The cosmological model based on cold dark matter (CDM) and dark energy has been
hugely successful in describing the observed evolution and large scale
structure of our Universe. However, at small scales (in the smallest galaxies
and at the centers of larger galaxies), a number of observations seem to
conflict with the predictions CDM cosmology, leading to recent interest in Warm
Dark Matter (WDM) and Self-Interacting Dark Matter (SIDM) models. These small
scales, though, are also regions dominated by the influence of baryons. I will
present results from high resolution cosmological galaxy simulations that
include both baryons and dark matter to show that baryonic physics can
significantly alter the dark matter structure and substructure of galaxies,
revolutionizing our expectations for galaxy structure and influencing our
interpretation of the Dark Matter model.
The seminar will be held in 131A Campbell Hall.
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