Reconstruction of cosmic ray air showers with Tunka-Rex data using template fitting of radio pulses

Abstract

We present an improved method for the precise reconstruction of cosmic ray air showers above $10^{17}$ eV with sparse radio arrays. The method is based on the comparison of predictions for radio pulse shapes by CoREAS simulations to measured pulses. We applied our method to the data of Tunka-Rex, a 1 km${}^2$ radio array in Siberia operating in the frequency band of 30-80 MHz. Tunka-Rex is triggered by the air-Cherenkov detector Tunka-133 and by scintillators (Tunka-Grande). The instrument collects air-shower data since 2012. The present paper describes updated data and signal analyses of Tunka-Rex and details of a new method applied. After efficiency cuts, when Tunka-Rex reaches its full efficiency, the energy resolution of about 10% given by the new method has reached the limit of systematic uncertainties due to the calibration uncertainty and shower-to-shower fluctuations. At the same time the shower maximum reconstruction is significantly improved up to an accuracy of 35 g/cm${}^2$ compared to the previous method based on the slope of the lateral distribution. We also define and now achieved conditions of the measurements, at which the shower maximum resolution of Tunka-Rex reaches a value of 25 g/cm${}^2$ and becomes competitive to optical detectors. To check and validate our reconstruction and efficiency cuts we compare individual events to the reconstruction of Tunka-133. Furthermore, we compare the mean of shower maximum as a function of primary energy to the measurements of other experiments.

arXiv commentpublished version

References in corpus (21)

• Monte Carlo treatment of hadronic interactions in enhanced Pomeron scheme: I. QGSJET-II model
• Radio detection of Cosmic-Ray Air Showers and High-Energy Neutrinos
• New facts about muon production in Extended Air Shower simulations
• Simulating radio emission from air showers with CoREAS
• Radio detection of cosmic ray air showers in the digital era
• A large light-mass component of cosmic rays at 10^{17} - 10^{17.5} eV from radio observations
• A method for high precision reconstruction of air shower Xmax using two-dimensional radio intensity profiles
• Antennas for the Detection of Radio Emission Pulses from Cosmic-Ray induced Air Showers at the Pierre Auger Observatory
• Measurement of cosmic-ray air showers with the Tunka Radio Extension (Tunka-Rex)
• Advanced functionality for radio analysis in the Offline software framework of the Pierre Auger Observatory
• Radio measurements of the energy and the depth of the shower maximum of cosmic-ray air showers by Tunka-Rex
• Reconstruction of air-shower parameters for large-scale radio detectors using the lateral distribution
• A comparison of the cosmic-ray energy scales of Tunka-133 and KASCADE-Grande via their radio extensions Tunka-Rex and LOPES
• The Pierre Auger Observatory: Contributions to the 36th International Cosmic Ray Conference (ICRC 2019)
• The wavefront of the radio signal emitted by cosmic ray air showers
• Improved absolute calibration of LOPES measurements and its impact on the comparison with REAS 3.11 and CoREAS simulations
• On noise treatment in radio measurements of cosmic ray air showers
• The effect of the atmospheric refractive index on the radio signal of extensive air showers
• Search for PeVatrons at the Galactic Center using a radio air-shower array at the South Pole
• The Giant Radio Array for Neutrino Detection
• Towards a cosmic-ray mass-composition study at Tunka Radio Extension (ARENA 2016)

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• The Giant Radio Array for Neutrino Detection (GRAND): Science and Design
• Open Questions in Cosmic-Ray Research at Ultrahigh Energies
• Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers
• Design and Initial Performance of the Prototype for the BEACON Instrument for Detection of Ultrahigh Energy Particles
• Radio Measurements of the Depth of Air-Shower Maximum at the Pierre Auger Observatory
• Radio Morphing: towards a fast computation of the radio signal from air showers
• Reconstructing the cosmic-ray energy from the radio signal measured in one single station
• Demonstrating Agreement between Radio and Fluorescence Measurements of the Depth of Maximum of Extensive Air Showers at the Pierre Auger Observatory
• Final results of the LOPES radio interferometer for cosmic-ray air showers
• Determination of the Cosmic-Ray Chemical Composition: Open Issues and Prospects
• Framework and Tools for the Simulation and Analysis of the Radio Emission from Air Showers at IceCube
• Expected performance of air-shower measurements with the radio-interferometric technique
• Reconstruction of sub-threshold events of cosmic-ray radio detectors using an autoencoder
• The SKA Particle Array Prototype: The First Particle Detector at the Murchison Radio-astronomy Observatory
• Design and Expected Performance of the IceCube-Gen2 Surface Array and its Radio Component (ARENA2022)
• Studying the mass sensitivity of air-shower observables using simulated cosmic rays
• Radio Detection of ultra-high-energy Cosmic-Ray Air Showers
• First analysis of inclined air showers detected by Tunka-Rex
• A Probabilistic Model for the Efficiency of Cosmic-Ray Radio Arrays
• Air Shower Detection by Arrays of Radio Antennas (ISVHECRI 2018)
• Uncertainties in the Estimation of Air Shower Observables from Monte Carlo Simulation of Radio Emission
• Parametrization of the Relative Amplitude of Geomagnetic and Askaryan Radio Emission from Cosmic-Ray Air Showers using CORSIKA/CoREAS Simulations (ICRC2021)