Universality and template synthesis of cosmic ray air shower radio emission

TL;DR

This paper introduces a semi-analytical template synthesis model for predicting cosmic ray air shower radio emissions, aiming to reduce computational costs while maintaining accuracy by leveraging the universality of radio signals from air shower segments.

Contribution

The paper develops a novel semi-analytical model using simulated radio pulses as templates, emphasizing the universality of radio emission from small air shower sections.

Findings

Model achieves high accuracy with reduced computation time.

Template-based approach captures key features of radio emission.

Universality principle enables generalized predictions.

Abstract

Accurate prediction of the radio emission from cosmic ray air showers relies on computationally demanding Monte Carlo simulations such as CoREAS. We aim to expedite this process via a semi-analytical synthesis model while maintaining high accuracy by using simulated radio pulses as templates. We present our key concept for template processing focusing on the development of the particle cascade and its empirical effect on the locally produced radio signal. In this context the universality of the radio emission from small sections of an air shower also becomes important where most previous studies focus on integral quantities observable at far distances.