Speaker
Description
The ARIANNA experiment aims to detect the radio signals of cosmogenic neutrinos. It is running in its pilot phase on the Ross Ice-shelf, and one station has been installed at South Pole. The ARIANNA concept is based on installing high-gain log periodic dipole antennas close to the surface monitoring the underlying ice for the radio signals following a neutrino interaction. Especially, but not only in this configuration, it is essential to understand the trajectories that the signals take through the ice. We will report on surprising but strong experimental evidence that horizontal propagation takes place in polar ice and that the concept of shadowing needs to be revisited. We will discuss the implications for neutrino detection, potentially an increase in effective volume, and the sensitivity of the detector.
