UNC-CH Physics and Astronomy Colloquium
Annika Peter, Ohio State University
“Particle Colliders in the Sky”
Dark matter makes up a quarter of the mass-energy budget of the Universe, yet its true identity remains a mystery. While traditional particle experiments, including particle colliders like the LHC, are the best-known testers of dark-matter physics, the potential for astronomy to weigh in on dark-matter properties is enormous. In this talk, I discuss particle models for dark matter, and how we can use astronomical observations to probe the fundamental particle properties of dark matter. In particular, I will focus on the collisions of the large, self-gravitating dark-matter structures that cocoon galaxies and clusters of galaxies (“halos”), and show what can be learned about the nature of dark matter from these massive particle colliders in the sky.