Hadronic gamma-ray emission models
Abstract
The discovery of rapid and simultaneous TeV/optical (UV, X-ray) variability provides strong evidence against the interaction between a thermal radiation field produced by an accretion flow and relativistic electrons in a jet as the origin of the gamma-rays in BL Lacertae objects. Synchrotron-self-Compton scattering (SSC) or proton-initiated cascades (PIC) remain viable mechanisms. The mechanisms predict very different magnetic field strengths and upper cut-off energies in the gamma-ray sources, i.e. the field strengths in SSC models are more than two orders of magnitude lower than in PIC models and the PIC spectra do not cut-off at TeV.
Cite
@article{arxiv.astro-ph/9612066,
title = {Hadronic gamma-ray emission models},
author = {Karl Mannheim},
journal= {arXiv preprint arXiv:astro-ph/9612066},
year = {2007}
}
Comments
4 pages, latex, Proc. of the Heidelberg Workshop on Gamma-ray emitting AGN, October 16-18, 1996, eds. J. Kirk and S. Wagner