Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8132653 | Astroparticle Physics | 2018 | 7 Pages |
Abstract
Very high energy gamma rays entering the atmosphere initiate Extensive air showers (EAS). The Cherenkov light induced by an EAS can be observed by ground-based telescopes to study the primary gamma rays. An important parameter of an EAS, determining its evolution, is the height of the first interaction of the primary particle. However, this variable cannot be directly measured by Cherenkov telescopes. We study two simple, independent methods for the estimation of the first interaction height. We test the methods using the Monte Carlo simulations for the 4 Large Size Telescopes (LST) that are part of the currently constructed Cherenkov Telescope Array (CTA) Observatory. We find that using such an estimated parameter in the gamma/hadron separation can bring a mild improvement (â¼10â20%) in the sensitivity in the energy range â¼30â200Â GeV.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Julian Sitarek, Dorota SobczyÅska, Katarzyna Adamczyk, MichaÅ Szanecki, Konrad Bernlöhr,