Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-11-15
Astrophys.Space Sci.309:111-117,2007
Astronomy and Astrophysics
Astrophysics
to appear in 'Astrophysics and Space Science' as proceedings in the 'Multi-Messenger Approach to High Energy Gamma-ray Sources
Scientific paper
10.1007/s10509-007-9408-9
We report our observations on 4 AGNs viz, Mkn421, Mkn501, 1ES1426+428 and ON231 belonging to a sub-class called blazars. The observations were carried out using the Pachmarhi Array of Cherenkov Telescopes and span about 6 years period from 2000 to 2005. We discuss our methods of analysis adopted to extract the gamma ray signal from cosmic ray background. We present our results on the emission of TeV gamma rays from these objects. Also, we report on the status of the new high altitude experiment, a 7 telescope array at Hanle in the Himalayas at an altitude of about 4200 m above mean sea level for detecting celestial gamma rays.
Abdel Rahman A.-M. M.
Acharya Bobby Samir
Bose Debanjan
Chitnis Varsha R.
Gupta Alok C.
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