Argonne National Laboratory

Upcoming Events

Exploring Dark Matter Interactions by Not Forming Black Holes in Neutron Stars

Series 
HEP Theoretical Physics Seminar
Presenter 
Joseph Bramante, University of Notre Dame
January 28, 2014 3:00PM to 4:00PM
Location 
Building 362, Room E188
Type 
Seminar
Abstract:
A plethora of possible direct and indirect dark matter signals have spurred an expanding array of dark matter models. In this talk I will show that for most dark matter models, dark matter-nucleon scattering implies that dark matter must annihilate or have repulsive self-interactions. Otherwise, dark matter will collect into neutron stars and form star-consuming black holes; the observation of old neutron stars precludes this possibility. I will particularly emphasize neutron star constraints on recently proposed models of self-interacting dark matter which fit cored dwarf galaxy dark matter halos.