Abstract
The NuMoon project aims to study ultra-high- energy neutrinos and cosmic rays by using radio telescopes to search for short pulses from the Moon. These pulses are created when a neutrino or cosmic ray impinges on the Moon and interacts below the lunar surface. Part of the energy is converted into a hadronic shower, which emits radio emis- sion in a process known as the Askaryan effect. In the first phase of the NuMoon project, 46 hrs of data were collected with the Westerbork Synthesis Radio Telescope in a low fre- quency band: 40 80 MHz. This resulted in an upper limit on the neutrino flux above 10 22 eV which is an order of mag- nitude lower than previous limits. Additionally, an upper limit has been set on the ultra-high-energy cosmic-ray flux. The second phase of NuMoon will consist of observations with LOFAR.
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