A multivariate analysis approach for the imaging atmospheric Cherenkov telescopes system HESS

作者：Dubois F^*; Lamanna G; Jacholkowska A

来源：Astroparticle Physics, 2009, 32(2): 73-88.

DOI：10.1016/j.astropartphys.2009.06.003

• Multivariate analysis
• HESS
• Gamma-rays
• Cherenkov
• IACT

A multivariate particle classification approach is proposed and applied to the analysis of the data from H.E.S.S. (High Energy Stereoscopic System). The combination of results from the three shower reconstruction methods: Hillas, model and 3D-model, leads to a substantial gain in the discrimination power between photons and hadrons. The construction and use of a combined effective estimator improves by several factors the signal-to-background ratio which is extremely important in case of studies of the faint and extended sources. The results of this approach are presented for a typical set of sources. The consequent gain in the sensitivity is shown through a comparison to the H.E.S.S. published results.

• 出版日期2009-9