Observations of AGNs using PACT
arXiv:astro-ph/0611467 · doi:10.1007/s10509-007-9408-9
Abstract
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.
to appear in 'Astrophysics and Space Science' as proceedings in the 'Multi-Messenger Approach to High Energy Gamma-ray Sources'
References in corpus (10)
- Multiwavelength Observations of Strong Flares From the TeV-Blazar 1ES 1959+650
- A Multi-wavelength View of the TeV Blazar Markarian 421: Correlated Variability, Flaring, and Spectral Evolution
- Modelling the TeV gamma-ray spectra of two low redshift AGNs: Mkn 501 and Mkn 421
- Near Infrared Intraday Variability of Mrk 421
- Observations of H1426+428 with HEGRA -- Observations in 2002 and reanalysis of 1999&2000 data
- Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001
- Multiwavelength Observations of the Blazar Mrk 421 in December 2002 and January 2003
- The TeV spectrum of H1426+428
- Predictions of the High-Energy Emission from BL Lac objects: The Case of W Comae
- Angular Resolution of the Pachmarhi Array of Cerenkov Telescopes