Abstract Details
| Name: | Anilkumar Tolamatti |
| Affiliation: | Bhabha Atomic Research Centre, Mumbai |
| Conference ID: | ASI2025_537 |
| Title: | Observations of high redshift gamma-ray blazars with MACE |
| Authors: | A. Tolamatti 1,2, A. Garg 3 , A. Pathania 1,2 , K. K. Singh 1,2, C. Borwankar 1, M. Khurana 1,2 , P. Chandra 1 , A. Shukla 3, S. Godiyal a, S. Godambe 1, J. Hariharan 1, Keshavanand 1 , N. Mankuzhyil 1, S. Norlha 1 , P. Pandey 1 , D. Sarkar 1,2, R. Thubstan 1 , K. Venugopal 1, Z. A. Dar 1,2 , S. V. Kotwal 1 , K. Chanchalani 1 , M. P. Das 1, N. Bhatt 1, B. Ghosal 1,2, S. Sahayanathan 1,2 , N. Dorji 4 , P. Dorjey 4 , M. Kothari 1 , N. Kumar 1, N. K. Agarwal 1, P. Marandi 1 , C. P. Kushwaha 1 , K. K. Gour 1 , M. K. Koul 1 , S. Bhattcharyya 1,2 , N. Chouhan 1, V. K. Dhar 1,2 , M. Sharma 1 , K. K. Yadav 1,2 |
| Authors Affiliation: | 1 Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai, 400085, Maharashtra, India 2 Homi Bhabha National Institute, Mumbai, 400094, Maharashtra, India 3 Department of Astronomy, Astrophysics and Space Engineering, Indian Institute of Technology, Indore, 453552, Madhya Pradesh, India 4 Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai, 400005, Maharashtra, India |
| Mode of Presentation: | Oral |
| Abstract Category: | Galaxies and Cosmology |
| Abstract: | High redshift blazars are the most powerful gamma-ray sources with central supermassive blackholes (SMBH) in excess of billion solar masses. They are the extraordinary probes to cosmological evolution blazars' SMBH and their connection with powerful relativistic jets. Detection of more than 3500 blazars by the space-based Fermi -Large Area Telescope (LAT) in the high energy (HE, above 100 MeV) band reveals that a significant amount of power carried by the relativistic plasma jets in blazars is dissipated at gamma-ray energies. However, a small fraction of only less than 3% are detected at very high energies (VHE, above 30 GeV) by the ground-based Cherenkov telescopes. Therefore, their detection at the highest possible energies is extremely important to understand the blazar-phenomenon in the Universe. In this paper, we report observational results obtained from the recent monitoring of a sample of high redshift (z > 0.3) blazars with the Major Atmospheric Cherenkov Experiment (MACE) in the energy range above ∼ 80 GeV. We also use the Fermi -LAT measurements to constrain their gamma-ray emission behaviour. |