Discovering neutrinos of extreme energies with the Radio Neutrino Observatory Greenland

The discovery of neutrinos above energies of 1e16 eV promises to uncover: the unknown sources of ultra-high energy cosmic rays, new insights into astrophysics of these sources and particle propagation through the Universe, as well as new particle physics, at energies far higher than those accessible to man-made accelerators.

The Radio Neutrino Observatory Greenland (RNO-G) is currently under construction and is scheduled to reach 35 stations in 2026.

The in-ice radio array RNO-G is the first large-scale implementation of the radio Askaryan technique and will provide an order of magnitude better discovery sensitivity than existing experiments. Its construction and operation is led by me and two colleagues from the US and Europe. This proposal maximizes RNO-G’s potential to discover the long awaited ultra-high energy neutrinos.

My research group will do this by enabling high-efficiency and high-purity neutrino searches indata through novel simulations with improved accuracy, high-precision instrument calibration, and the unique exploitation of cosmic ray signals as a training tool.