# Sensitivity to point-like sources of the ALTO atmospheric particle detector array, designed for $\rm 200\,GeV$--$\rm 50\,TeV$ $γ$-ray astronomy

**Authors:** M. Punch, M. Senniappan, Y. Becherini, G. Kukec Mezek, S. Thoudam, T. Bylund, J. -P. Ernenwein  
**arXiv:** [2303.15248](https://arxiv.org/abs/2303.15248)  
**Date:** 2023-03-27  
**Summary page:** https://www.summarizepaper.com/fr/arxiv-id/2303.15248v1/

## Abstract

In the context of atmospheric shower arrays designed for $\gamma$-ray astronomy and in the context of the ALTO project, we present: a study of the impact of heavier nuclei in the cosmic-ray background on the estimated $\gamma$-ray detection performance on the basis of dedicated Monte Carlo simulations, a method to calculate the sensitivity to a point-like source, and finally the required observation times to reach a firm detection on a list of known point-like sources.