Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2009-04-23
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
4 pages, 2 figures proceedings to "44th Rencontres de Moriond", La Thuile (Val d'Aosta, Italy) on "Very High Energy Phenomena
Scientific paper
The TACTIC gamma-ray telescope, equipped with a tracking light collector of $\sim$9.5m$^2$ area and a 349-pixel imaging camera has been in operation at Mount Abu in Western India since 2001. Having a sensitivity of detecting the Crab Nebula above 1.2 TeV at 5.0$\sigma$ significance level in 25h of observations, this telescope has detected gamma-ray emissions from Mrk501 and Mrk421 and is presently being deployed for monitoring of AGNs. As a new Indian initiative in $\gamma$-ray astronomy we are setting up the 21-m diameter MACE $\gamma$-ray telescope at the high altitude (4200m asl) astronomical site at Hanle in North India. This telescope will deploy a 1408-pixels integrated camera at its focal plane. Designed to operate at a trigger threshold of $\sim$30 GeV, this telescope is expected to be operational in 2011. Some of the salient features of the TACTIC telescope along with the results of its recent observations and the design details of the MACE telescope are presented in this paper.
HIGRO collaboration for the
Yadav Kamalesh
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