Effect of intergalactic absorption in the TeV gamma-ray spectrum of Mkn 501
arXiv:astro-ph/9910536 · doi:10.1063/1.1291362
Abstract
We discuss an effect of the intergalactic absorption of the TeV gamma-rays in time-averaged spectrum of Mkn 501 measured by the HEGRA Collaboration. Analysis of the spectral behavior, variability time scale and relevant calculations of TeV gamma-ray emission allow to conclude the presence of a noticeable absorption of the TeV gamma-rays in the Mkn 501 energy spectrum.
arXiv comment6 pages, 4 figures, to appear in "GeV-TeV Astrophysics: Toward a Major Atmospheric Cherenkov Telescope VI," Snowbird, Utah (August, 1999)