Effect of intergalactic absorption in the TeV γ-ray spectrum of Mkn 501
Abstract
We discuss an effect of the intergalactic absorption of the TeV γ-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 γ-ray emission allow to conclude the presence of a noticeable absorption of the TeV γ-rays in the Mkn 501 energy spectrum. .
- Publication:
-
GeV-TeV Gamma Ray Astrophysics Workshop : towards a major atmospheric
- Pub Date:
- June 2000
- DOI:
- 10.1063/1.1291362
- arXiv:
- arXiv:astro-ph/9910536
- Bibcode:
- 2000AIPC..515..159K
- Keywords:
-
- 98.54.Cm;
- 98.62.Ra;
- 95.85.Pw;
- Active and peculiar galaxies and related systems;
- Intergalactic matter;
- quasar absorption and emission-line systems;
- Lyman forest;
- gamma-ray;
- Astrophysics
- E-Print:
- 6 pages, 4 figures, to appear in "GeV-TeV Astrophysics: Toward a Major Atmospheric Cherenkov Telescope VI," Snowbird, Utah (August, 1999)