Multiwavelength study of TeV Blazar Mrk421 during giant flare and observations of TeV AGNs with HAGAR

• DOI: 10.48550/arxiv.1110.6795
• Publication Date: 2011-01-01
• Authors: A. Shukla; P. R. Vishwanath; G. C. Anupama; T. P. Prabhu; V. R. Chitnis; B. S. Acharya; R. J. Britto; B. B. Singh; Pooja Bhattacharjee; L. Saha
• Keywords: Flare; Cherenkov Telescope Array

The radiation mechanism of very high energy $\gamma$-ray emission from blazars and crucial parameters like magnetic field, size the emitting region are not well understood yet. To understand above mentioned properties blazars, we observed five nearby TeV (Mrk421, Mrk501, 1ES2344+514, 1ES1218+304 3C454.3) one radio galaxy (M87) using High Altitude GAmma Ray (HAGAR) telescope. HAGAR is an array seven telescopes located at Hanle, India to detect Cherenkov light caused by extensive air showers initiated $\gamma$-rays. Mrk421 was undergo its brightest flaring episodes on 2010 February 17, detected various experiments in X-rays $\gamma$- rays. observations this source during 13 - 19, energies 250 GeV show enhancement flux level, with a 6-7 Crab units being 17. We present spectral distribution episode. In addition this, analysis procedure extract signal data discussed preliminary results all AGNs presented.