Abstract Details

Name: Zahoor Malik
Affiliation: University of Kashmir
Conference ID: ASI2020_83
Title : Estimation of Extragalactic Background Light through Very High Energy Gamma-ray opacity of Blazars
Authors and Co-Authors : Zahoor Malik,S. Sahayanathan,Aaqib Manzoor,Zahir Shah,Atreyee Sinha,Naseer Iqbal
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : It has been known that the very high energy (VHE) gamma ray spectral indices of blazars show significant correlation with the source redshift. Absence of any such correlation in low energy gamma rays and X-rays clearly indicate the presence of EBL induced absorption of VHE gamma rays. We update the VHE gamma ray index and the redshift values by including the recent VHE observations and this improved the correlation between these quantities. Further, we assume the EBL spectra at energies relevant for VHE photon absorption as a cubic polynomial and estimate its coefficients by nullifying the correlation of the intrinsic VHE spectra with the redshift.