Radio-Morphing: a fast, efficient and accurate tool to compute the radio signals from air-showers
Simon Chiche, Olivier Martineau-Huynh, Kumiko Kotera, Matias Tueros,, Krijn D. de Vries

TL;DR
Radio Morphing is a rapid, accurate, semi-analytical tool for simulating radio signals from air-showers, significantly reducing computation time while maintaining high precision, thus facilitating large-scale air-shower studies.
Contribution
The paper introduces major improvements to Radio Morphing, including refined physical scaling laws, incorporation of shower fluctuations, and advanced interpolation, enhancing accuracy and efficiency.
Findings
Relative amplitude differences below 10-25% for most antennas.
Computation time reduced by over 100 times.
Achieves nanosecond-level timing accuracy.
Abstract
Radio detection of air-showers is a mature technique that has gained momentum over the past decades. With increasingly large-scale experiments, massive air-shower simulations are needed to evaluate the radio signal at each antenna position. Radio Morphing was developed for this purpose. It is a semi-analytical tool that enables a fast computation of the radio signal emitted by any air-shower at any location, from the simulation data of one single reference shower at given positions. It relies on simple electromagnetic scaling laws of the radio emission (i.e., electric field) at the antenna level and then an interpolation of the radio pulse at the desired positions. We present here major improvements on the Radio Morphing method that have been implemented recently. The upgraded version is based on revised and refined scaling laws, derived from physical principles. It also includes…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Radio Astronomy Observations and Technology · Electromagnetic Compatibility and Measurements
