'TeV Gamma-ray Crisis' and an Anisotropic Space Model
Astrophysics
2007-05-23 v1 High Energy Physics - Phenomenology
Abstract
To solve the `TeV gamma crisis', we examine a model whose one spatial direction is discretized at a high energy scale. Assuming the standard extra-galactic IR photon distribution, we evaluate the mean free-path of a energetic photon which acquires an effective mass in the model. For a wide range of the value of the lattice energy scale between a few TeV and around GeV, the mean free-path of a TeV energy photon can be enlarged enough to solve the `crisis'. Taking into account the effects of the universe expansion, we find bounds of the lattice constant.
Keywords
Cite
@article{arxiv.astro-ph/0404595,
title = {'TeV Gamma-ray Crisis' and an Anisotropic Space Model},
author = {Gi-Chol Cho and Jun-ichi Kamoshita and Mariko Matsunaga and Akio Sugamoto and Isamu Watanabe},
journal= {arXiv preprint arXiv:astro-ph/0404595},
year = {2007}
}
Comments
16 pages, 4 figures