Reconstructing the neutrino energy for in-ice radio detectors

Abstract

Starting in summer 2021, the Radio Neutrino Observatory in Greenland (RNO-G) will search for astrophysical neutrinos at energies >10 PeV by detecting the radio emission from particle showers in the ice around Summit Station, Greenland. We present an extensive simulation study that shows how RNO-G will be able to measure the energy of such particle cascades, which will in turn be used to estimate the energy of the incoming neutrino that caused them. The location of the neutrino interaction is determined using the differences in arrival times between channels and the electric field of the radio signal is reconstructed using a novel approach based on Information Field Theory. Based on these properties, the shower energy can be estimated. We show that this method can achieve an uncertainty of 13% on the logarithm of the shower energy after modest quality cuts and estimate how this can constrain the energy of the neutrino. The method presented in this paper is applicable to all similar radio neutrino detectors, such as the proposed radio array of IceCube-Gen2.

23 pages, 20 figures, version accepted at EPJ-C

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Cited by in corpus (13)

• The ultra-high-energy neutrino-nucleon cross section: measurement forecasts for an era of cosmic EeV-neutrino discovery
• Probing New Physics at Future Tau Neutrino Telescopes
• In situ, broadband measurement of the radio frequency attenuation length at Summit Station, Greenland
• Deep-learning-based reconstruction of the neutrino direction and energy for in-ice radio detectors
• Probing Heavy Sterile Neutrinos at Ultrahigh Energy Neutrino Telescopes via the Dipole Portal
• Radio Detection of High Energy Neutrinos in Ice
• Near-future discovery of point sources of ultra-high-energy neutrinos
• Improving sensitivity of the ARIANNA detector by rejecting thermal noise with deep learning
• The flavor composition of ultra-high-energy cosmic neutrinos: measurement forecasts for in-ice radio-based EeV neutrino telescopes
• Atmospheric muons at PeV energies in radio neutrino detectors
• In-ice Askaryan Emission from Air Showers: Implications for Radio Neutrino Detectors
• toise: a framework to describe the performance of high-energy neutrino detectors
• Event Reconstruction for Radio-Based In-Ice Neutrino Detectors with Neural Posterior Estimation