Cosmic rays above 1017 eV pose a problem. They are the particles of the highest energy known in the Universe today, but even after several decades of study, their origin remains elusive. As air showers, they emit radio emission in the atmosphere, which provides a promising way of detecting and studying the primary cosmic rays. Following the same mechanisms their neutrino counterparts, created through interaction with the cosmic microwave background, cause radio emission when interacting in dense media such as ice. By studying these neutrinos, it is hoped to make a large step to finally solve the problem of the origin of ultra-high energy cosmic rays.
I will report on on-going efforts at the ARIANNA array, to study the capabilities of a large radio array to detect interactions of neutrinos above 1016 eV in the Antarctic ice. As ARIANNA stations are also excellent cosmic ray detectors, I will focus on the already achieved measurements of cosmic rays and elaborate on the way forward for the detection of cosmogenic neutrinos.
Coffee: 1:45 pm, 241 Compton