Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-10-10
Astronomy and Astrophysics
Astrophysics
4 pages, proceedings of the 30th ICRC, Merida, Mexico, 2007
Scientific paper
Measurements at 100 TeV and above are an important goal for the next generation of high energy gamma-ray astronomy experiments to solve the still open problem of the origin of galactic cosmic rays. The most natural experimental solution to detect very low radiation fluxes is provided by the Extensive Air Shower (EAS) arrays. They benefit from a close to 90% duty cycle and a very large field of view (about 2 sr), but the sensitivity is limited by their angular resolution and their poor cosmic ray background discrimination. Above 10 TeV the standard technique for rejecting the hadronic background consists in looking for "muon-poor" showers. In this paper we discuss the capability of a large muon detector (A=2500 m2) operated with an EAS array at very high altitude (>4000 m a.s.l.) to detect gamma-ray fluxes around 100 TeV. Simulation-based estimates of energy ranges and sensitivities are presented.
Di Girolamo Tristano
Rossi Elena
Saggese L.
Sciascio Giuseppe Di
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