Argonne National Laboratory

Upcoming Events

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

HEP Theoretical Physics Seminar
Joseph Bramante, University of Notre Dame
January 28, 2014 3:00PM to 4:00PM
Building 362, Room E188
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.