Jul 22 – 27, 2018
US/Eastern timezone

Early- and Late-Time Scattering of Dark Matter and Baryons in Cosmology

Jul 24, 2018, 4:50 PM


Talk Theory 2.6 Theory


Kimberly Boddy (Johns Hopkins University)


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 highly complementary to that of direct detection. Depending on the form of the interaction, scattering is most prominent either at early times or late times. In this talk, I will describe the effects of scattering in the CMB power spectra and in the matter power spectrum, and discuss the implications of late-time scattering during Cosmic Dawn.

Primary author

Kimberly Boddy (Johns Hopkins University)

Presentation materials