11th International Workshop on Acoustic and Radio EeV Neutrino Detection Activities

Session

Calibration/Backgrounds

Jun 9, 2026, 11:30 AM

Schlosshotel Karlsruhe

32. Wind Related Background Radio Pulses at the Radio Neutrino Observatory in Greenland

Pascal Schriefer (ECAP / Friedrich-Alexander-Universität Erlangen-Nürnberg)

6/9/26, 11:30 AM

During periods with high wind speeds (> 8 − 10 m/s) an overwhelming number of radio pulses are detected with RNO-G. This effect has also been reported by other polar radio experiments, and, more recently, also by experiments in sandy environments. This poses a significant challenge for the identification of cosmic particles during those times. Periods with strong winds are not only very common...

75. The Triboelectric Effect at the Pierre Auger Observatory

Julian Rautenberg (Bergiscche Universität Wuppertal)

6/9/26, 11:45 AM

With the AugerPrime extension of the Pierre Auger Observatory all surface detector stations have been equipped with radio antennas to measure extensive air showers in the 30-80 MHz band.
For the data acquisition using a trigger based on radio pulses, the triboelectric effect has been reported to be responsible for an increased background rate at high wind speeds for ice-based radio...

16. Near-horizon transient backgrounds for radio experiments

Anna Nelles

6/9/26, 12:00 PM

Radio telescopes that aim to find astroparticles rely on the detection of impulsive, short-lived and transient radio signals produced primarily via the geomagnetic emission effect. One of the main challenges of this detection method is the presence of abundant radio backgrounds produced by human activity, both continuous (as in intentional emission for telecommunications) and impulsive (for...

17. Investigating Radio Frequency Interference from Satellite Constellations at the Radio Neutrino Observatory in Greenland.

Annanay Jaitly (DESY Zeuthen | RNO-G)

6/9/26, 12:15 PM

The proliferation of low-earth-orbit satellites over the last decade has significantly increased the risk of radio frequency interference with ground-based radio astronomy experiments. Unintentional, narrow-band emission at protected frequency bands, as well as broadband emission from such satellites have been conclusively detected by radio experiments like LOFAR, NenuFAR and...

12. Relative Calibration of the AugerPrime Radio Detector at the Pierre Auger Observatory

Alex Reuzki (RWTH Aachen University)

6/9/26, 1:30 PM

Radio emissions of extensive air showers can be observed with the AugerPrime radio detector (RD) at the Pierre Auger Observatory. As part of the AugerPrime upgrade, RD has been installed on $1660$ water-Cherenkov detectors on an area of roughly $3000 \text{ km}^2$ and consists of dual-polarized Short Aperiodic Loaded Loop Antennas (SALLA). To achieve high measurement precision, the SALLA must...

3. A in-situe absolute gain calibration for the in-ice radio neutrino detector RNO-G

Felix Schlüter (Free University Brussels (ULB))

6/9/26, 1:45 PM

The Radio Neutrino Observatory Greenland (RNO-G) utilizes a network of in-ice radio antennas to detect the radio emission from ultra-high-energy neutrinos interacting with the ice. To reconstruct neutrino properties, such as energy and direction, an accurate calibration of the detector response is indispensable. In RNO-G, the complex interplay between electrical and optical components make a...

73. HiCal3: Calibration of PUEO

Kenny Couberly

6/9/26, 2:00 PM

The Payload for Ultrahigh Energy Observations (PUEO) is a long duration balloon
experiment that flew over Antarctica for 23 days from December 2025 to January
2026. Approximately 24 hours after the launch of the PUEO, two high altitude
calibration balloon payloads (HiCal3a and HiCal 3b) were launched and followed
the PUEO. The HiCal payloads contained high voltage pulse generators...

26. Precision Measurements of the Firn Refractive Index for RNO-G

Nils Heyer (Uppsala University)

6/9/26, 2:15 PM

We present a measurement of the refractive index of firn ice at Summit Station, the site of the Radio Neutrino Observatory in Greenland (RNO-G). The refractive index profile was determined, without relying on density data, by using absolute time-of-flight measurements with sub-nanosecond precision. We establish the consistency of these findings across several locations near Summit Station and...

23. Seasonal ice evolution: implications for UHEN detection and reconstruction

Dr Alexander Kyriacou (Université libre de Bruxelles)

6/9/26, 2:30 PM

The upper 100 - 200 m of the polar ice sheet, known as the firn layer, undergoes seasonal variations in density and temperature that modify its refractive index profile. These changes lead to variations in received signal power and arrival time for radio signals propagating through near-surface regions of the firn. In the absence of time-dependent ice models, this introduces an irreducible...