Conveners
Messengers from the Early Universe: Plenary Introduction
- Joel Meyers (Southern Methodist University;)
- Nathaniel Craig (UC Santa Barbara)
Messengers from the Early Universe: Parallel
- Joel Meyers (Southern Methodist University;)
- Nathaniel Craig (UC Santa Barbara)
Messengers from the Early Universe: Plenary Summary Report
- Nathaniel Craig (UC Santa Barbara)
- Joel Meyers (Southern Methodist University;)
CMB measurements have unique and almost completely model-independent sensitivity to new light degrees of freedom. As a result, whole classes of dark sectors and dark matter models should produce a signal at CMB S4. Non-detection would severely constrain the space of possible solutions for fundamental puzzles like the nature of dark matter or the hierarchy problem. Positive detection would...
In this talk I will show that we can detect relativistic axions that are a relic of the early Universe with instruments searching for axion dark matter. I will outline several forms such a cosmic axion background could take, demonstrate how the CaB would appear at an axion haloscope, and explain why current analyses would discard any emerging signal as a background.
