Neutrino Interactions in the Late Universe

Understand

The cosmic neutrino background is both a dramatic prediction of the hot Big Bang and a compelling target for current and future observations.

• The impact of relativistic neutrinos in the early universe has been observed at high significance in a number of cosmological probes.
• In addition, the non-zero mass of neutrinos alters the growth of structure at late times, and this signature is a target for a number of upcoming surveys.
• These measurements are sensitive to the physics of the neutrino and could be used to probe physics beyond the standard model in the neutrino sector.