Threshold energy estimate of the proposed MACE γ -ray telescope at Hanle

M. L. Sapru, A. K. Tickoo, V. K. Dhar, S. Thoudam, R. C. Rannot, R. Koul

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations


The fact that EGRET detected over 250 objects above 100 MeV while only a handful of sources have been detected above 100 GeV indicates that there is a good chance of detecting a significant number of these sources (particularly those which do not show a signature of steepening or cut off up to a few GeV), if the threshold energy of ground based telescopes is lowered to ∼ 20 GeV. In the present study, we report the threshold energy estimate of the MACE (Major Atmospheric Cerenkov Experiment) imaging telescope, proposed to be installed in the campus of Indian Astronomical Observatory at Hanle (32.8 N, 78.9 - E, 4200m asl). The results of the Monte Carlo simulations carried out with CORSIKA code, suggest that using a pixel threshold of ≥ 4pe and a nearest neighbour quadruplet trigger, γ -ray energy threshold of ∼ 15GeV is achievable by the MACE telescope. Details of the simulation work for estimating the threshold energy along with results obtained are presented in this paper.

Original languageBritish English
Number of pages4
StatePublished - 2005
Event29th International Cosmic Ray Conference, ICRC 2005 - Pune, India
Duration: 3 Aug 200510 Aug 2005


Conference29th International Cosmic Ray Conference, ICRC 2005


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