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Muons are copiously produced within hadronic extensive air showers (EAS)occurring in the Earth's atmosphere, and are used by particle air showerdetectors as a means of identifying the primary cosmic ray which initiated theEAS. Imaging Atmospheric Cherenkov Telescopes (IACTs), designed for thedetection of gamma-ray initiated EAS for the purposes of Very High Energy (VHE)gamma-ray astronomy, are subject to a considerable background signal due tohadronic EAS. Although hadronic EAS are typically rejected for gamma-rayanalysis purposes, single muons produced within such showers generate clearlyidentifiable signals in IACTs and muon images are routinely retained and usedfor calibration purposes. For IACT arrays operating with a stereoscopictrigger, when a muon triggers one telescope, other telescopes in IACT arraysusually detect the associated hadronic EAS. We demonstrate for the first timethe potential of IACT arrays for competitive measurements of the muon contentof air showers, their lateral distribution and longitudinal profile ofproduction slant heights in the TeV energy range. Such information can provideuseful input to hadronic interaction models.

Potential for measuring the longitudinal and lateral profile of muons in TeV air showers with IACTs