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

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The fact that EGRET detected over 250 objects above 100 MeV while only a handful of sources have beendetected above 100 GeV indicates that there is a good chance of detecting a signicant number of these sources(particularly those which do not show a signature of steepening or cut off up to a few GeV), if the thresholdenergy of ground based telescopes is lowered to20 GeV. In the present study, we report the threshold energyestimate of the MACE (Major Atmospheric Cerenkov Experiment) imaging telescope, proposed to be installedin the campus of Indian Astronomical Observatory at Hanle (32.8N, 78.9E, 4200m asl). The results ofthe Monte Carlo simulations carried out with CORSIKA code, suggest that using a pixel threshold of4peand a nearest neighbour quadruplet trigger,-ray energy threshold of15GeV is achievable by the MACEtelescope. Details of the simulation work for estimating the threshold energy along with results obtained arepresented in this paper.

Tickoo, A. K.Bhabha Atomic Research Centre, India (författare)
Dhar, V. K.Bhabha Atomic Research Centre, India (författare)
Thoudam, SatyendraBhabha Atomic Research Centre, India(Swepub:lnu)sathaa (författare)
Rannot, R. C.Bhabha Atomic Research Centre, India (författare)
Koul, R.Bhabha Atomic Research Centre, India (författare)
Bhabha Atomic Research Centre, India (creator_code:org_t)

Av författaren/redakt...: Sapru, M. L.; Tickoo, A. K.; Dhar, V. K.; Thoudam, Satyend ...; Rannot, R. C.; Koul, R.

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