Reconstructing Air Shower Parameters with MGMR3D
Abstract
Measuring the radio emission from cosmic ray particle cascades has proven to be a very efficient method to determine their properties such as the mass composition. Efficient modeling of the radio emission from air showers is crucial in order to extract the cosmic ray physics parameters from the measured radio emission. MGMR3D is a fast semi-analytic code that calculates the complete radio footprint, i.e.\ intensity, polarization, and pulse shapes, for a parametrized shower-current density and can be used in a chi-square optimization to fit a given radio data. It is many orders of magnitude faster than its Monte Carlo counterparts. We provide a detailed comparative study of MGMR3D to Monte Carlo simulations, where, with improved parametrizations, the shower maximum is found to have very strong agreement with a small dependency on the incoming zenith angle of the shower. Another interesting feature we observe with MGMR3D is sensitivity to the shape of the longitudinal profile in addition to . This is achieved by probing the distinguishable radio footprint produced by a shower having a different longitudinal profile than usual. Furthermore, for the first time, we show the results of reconstructing shower parameters for LOFAR data using MGMR3D, and obtaining a resolution of 22 g/cm and energy resolution of 19\%.
Keywords
Cite
@article{arxiv.2307.04242,
title = {Reconstructing Air Shower Parameters with MGMR3D},
author = {P. Mitra and O. Scholten and T. N. G. Trinh and S. Buitink and J. Bhavani and A. Corstanje and M. Desmet and H. Falcke and B. M. Hare and J. R. Hörandel and T. Huege and N. Karastathis and G. K. Krampah and K. Mulrey and A. Nelles and H. Pandya and S. Thoudam and K. D. de Vries and S. ter Veen},
journal= {arXiv preprint arXiv:2307.04242},
year = {2023}
}