title: Extragalactic Background Light expected from photon-photon absorption on spectra of distant Active Galactic Nuclei
abstract: Extragalactic background radiation blocks the propagation of TeV gamma-ray over large distances by producing e+e− pairs. As a result, primary spectrum of gamma-source is changed, depending on spectrum of background light. So, hard spectra of Active Galactic Nuclei with high red shifts allow the determination of a EBL spectrum. The redshifts of SHALON TeV gamma-ray sources range from 0.018 to 1.375 those spectra are resolved at the energies from 800GeV to 30 TeV. Spectral energy distribution of E
journal: EPJ Web of Conferences