A template method for measuring the iron spectrum in cosmic rays with Cherenkov telescopes

TL;DR

This paper presents a new method using Cherenkov telescopes to measure the iron spectrum in cosmic rays, aiding understanding of their origins and propagation.

Contribution

It introduces a template-based technique for reconstructing cosmic ray properties from Cherenkov light, enhancing elemental composition analysis.

Findings

Effective differentiation of heavy nuclei from lighter particles.

Improved accuracy in measuring cosmic ray spectra.

Potential for new insights into cosmic ray sources.

Abstract

Understanding the sources, acceleration mechanisms, and propagation of cosmic rays is an active area of research in astro-particle physics. Measuring the spectrum and elemental composition of cosmic rays on earth can help solve this question. IACTs, while mainly used for $\gamma$-ray astronomy and indirect searches for dark matter, can make an important contribution here. In particular, they are able to distinguish heavy nuclei in cosmic rays from protons and lighter nuclei by exploiting the direct Cherenkov light emitted by charged particles high in the atmosphere. In this paper, a method to reconstruct relevant properties of primary cosmic ray particles from the Cherenkov light emitted by the primary particles and the air showers induced by them will be presented.