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 (Université Paris Cité, CNRS/IN2P3, AstroParticule et Cosmologie), M. Senniappan (Department of Physics, Khalifa University, PO Box 127788, Abu Dhabi, United Arab Emirates), Y. Becherini (Université Paris Cité, CNRS/IN2P3, AstroParticule et Cosmologie), G. Kukec Mezek (Department of Physics, Khalifa University, PO Box 127788, Abu Dhabi, United Arab Emirates), S. Thoudam (Department of Physics, Khalifa University, PO Box 127788, Abu Dhabi, United Arab Emirates), T. Bylund (Department of Physics, Khalifa University, PO Box 127788, Abu Dhabi, United Arab Emirates), J. -P. Ernenwein (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)
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.
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