The Auger Radio Infill SKALA Extension (ARISE): First Air-Shower Measurements
Abstract
The Auger Radio Infill SKALA Extension (ARISE) was installed at the Pierre Auger Observatory in 2025 to detect the radio emission in the band of 50−350MHz of near-vertical cosmic-ray air showers of energies around and above 100PeV. The array comprises 18 SKALA~v2 antennas deployed around one of the surface-detector stations of the 433m array (SD-433), which provides the trigger for ARISE. We present first measurements with ARISE and show the detection of radio pulses associated with extensive air showers. Radio signals are found in coincidence with SD-433 events, and a comparison of the arrival directions reconstructed from the radio and surface detector signals confirms the measurement of air showers with ARISE. These observations provide a first assessment of the detector setup and demonstrate the potential of ARISE for radio detection of near-vertical air showers.
Versions
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BibTeX
@misc{collaboration2026auger,
title = {{The Auger Radio Infill SKALA Extension (ARISE): First Air-Shower Measurements}},
author = {Carmen Merx for the Pierre Auger Collaboration},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.21105},
eprint = {2609.21105},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.21105},
}
RIS
TY - UNPB
TI - The Auger Radio Infill SKALA Extension (ARISE): First Air-Shower Measurements
AU - Carmen Merx for the Pierre Auger Collaboration
PY - 2026
DA - 2026/09/17
PB - arXiv
DO - 10.48550/arxiv.2609.21105
UR - https://arxiv.org/abs/2609.21105
AB - The Auger Radio Infill SKALA Extension (ARISE) was installed at the Pierre Auger Observatory in 2025 to detect the radio emission in the band of 50−350MHz of near-vertical cosmic-ray air showers of energies around and above 100PeV. The array comprises 18 SKALA~v2 antennas deployed around one of the surface-detector stations of the 433m array (SD-433), which provides the trigger for ARISE. We present first measurements with ARISE and show the detection of radio pulses associated with extensive air showers. Radio signals are found in coincidence with SD-433 events, and a comparison of the arrival directions reconstructed from the radio and surface detector signals confirms the measurement of air showers with ARISE. These observations provide a first assessment of the detector setup and demonstrate the potential of ARISE for radio detection of near-vertical air showers.
ER -