Kavli Affiliate: Eric Oberla
| First 5 Authors: Jaime Álvarez-Muñiz, Jaime Álvarez-Muñiz, , ,
| Summary:
The Giant Radio Array for Neutrino Detection (GRAND) is an envisioned
observatory of ultra-high-energy particles of cosmic origin, with energies in
excess of 100 PeV. GRAND uses large surface arrays of antennas to look for the
radio emission from extensive air showers that are triggered by the interaction
of ultra-high-energy cosmic rays, gamma rays, and neutrinos in the atmosphere
or underground. In particular, for ultra-high-energy neutrinos, the future
final phase of GRAND aims to be sensitive enough to detect them in spite of
their plausibly tiny flux. Three prototype GRAND radio arrays have been in
operation since 2023: GRANDProto300, in China, GRAND@Auger, in Argentina, and
GRAND@Nanccay, in France. Their goals are to field-test the GRAND detection
units, understand the radio background to which they are exposed, and develop
tools for diagnostic, data gathering, and data analysis. This list of
contributions to the 39th International Cosmic Ray Conference (ICRC 2025)
presents an overview of GRAND, in its present and future incarnations, and a
first look at data collected by GRANDProto300 and GRAND@Auger, including the
first cosmic-ray candidates detected by them.
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