VHE gamma ray absorption by galactic interstellar radiation field
arXiv:astro-ph/0508236 · doi:10.1051/0004-6361:20054422
Abstract
Adopting a recent calculation of the Galactic interstellar radiation field, we calculate the attenuation of the very high energy gamma rays from the Galactic sources. The infra-red radiation background near the Galactic Center is very intense due to the new calculation and our result shows that a cutoff of high energy gamma ray spectrum begins at about 20 TeV and reaches about 10% for 50 TeV gamma rays.
6 pages, 1 figure, figure is changed, conclusion not changed