Photoabsorption of Gamma Rays in Relativistic Jets
Astrophysics
2016-11-09 v1
Abstract
A derivation of the \gamma\gamma --> e^+ e^- optical depth for \gamma rays produced in a comoving spherical emitting region is presented. Employing a simplified expression for the \gamma\gamma absorption cross section, analytic expressions for the minimum Doppler factor implied by the requirement of gamma-ray transparency are derived for a broken power-law spectrum of target photons which are isotropically distributed in the comoving frame. Application to specific systems is illustrated.
Cite
@article{arxiv.astro-ph/0402438,
title = {Photoabsorption of Gamma Rays in Relativistic Jets},
author = {Charles Dermer},
journal= {arXiv preprint arXiv:astro-ph/0402438},
year = {2016}
}
Comments
4 pages, in the Tenth Marcel Grossman Meeting on General Relativity, Rio de Janeiro, Brazil (July 20-26, 2003)