News & Events
Kim Boddy (Johns Hopkins)
McDonald Institute Seminar Series
Location: STI 501
Date: January 21, 2020
Time: 11:30am - 12:30pm
Searching for Dark Matter Interactions in Cosmology
There is a substantial effort in the physics community to search for dark matter interactions with the Standard Model of particle physics. Collisions between dark matter particles and baryons exchange heat and momentum in the early Universe, enabling a search for dark matter interactions using cosmological observations in a parameter space that is complementary to that of direct detection. In this talk, I will describe the effects of scattering in cosmology and show constraints using Planck 2015 data and SDSS-identified satellite galaxies of the Milky Way. I will also discuss the implications of late-time scattering during the era of Cosmic Dawn.