BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Lan Nguyen \, Notre Dame\n\n
In this talk we study the effect s of interacting dark matter in the structure of galactic halos. The core- cusp problem remains as one of the unresolved challenges between observati on and simulations in the standard \;CDM model for the formation of gal axies. Basically\, the problem is that \;CDM simulations predict that t he center of galactic dark matter halos contain a steep power-law mass den sity profile. However\, observations of dwarf galaxies in the Local Group reveal a density profile consistent with a nearly at distribution of dark matter near the center. A number of solutions to this dilemma have been pr oposed. We discuss the possibility that the dark matter particles themselv es self interact and scatter. The scattering of dark matter particles then can smooth out their profile in high-density regions. We also summarize a theoretical model as to how self- interacting dark matter may arise. We i mplement this form in simulations of self-interacting dark matter in model s for galaxy formation and evolution. Constraints on properties of this fo rm of self-interacting dark matter will be summarized.
\n DTSTART:20171101T193000Z LOCATION:Physics Building\, Room 204 SUMMARY:Constraints on interacting dark matter from small scale structure END:VEVENT END:VCALENDAR