High-energy emission from jet-cloud interactions in AGNs
Abstract
Active galactic nuclei present continuum and line emission. The emission lines are originated by gas located close to the central super-massive black hole. Some of these lines are broad, and would be produced in a small region called broad-line region. This region could be formed by clouds surrounding the central black hole. In this work, we study the interaction of such clouds with the base of the jets in active galactic nuclei, and we compute the produced high-energy emission. We focus on sources with low luminosities in the inner jet regions, to avoid strong gamma-ray absorption. We find that the resulting high-energy radiation may be significant in Centaurus A. Also, this phenomenon might be behind the variable gamma-ray emission detected in M87, if very large dark clouds are present. The detection of jet-cloud interactions in active galactic nuclei would give information on the properties of the jet base and the very central regions.
Cite
@article{arxiv.1003.4676,
title = {High-energy emission from jet-cloud interactions in AGNs},
author = {Anabella T. Araudo and Valenti Bosch-Ramon and Gustavo E. Romero},
journal= {arXiv preprint arXiv:1003.4676},
year = {2015}
}
Comments
6 pages, 3 figures. To appear in the proceeding of the conference: "High Energy Phenomena in Relativistic Outflows (HEPRO) II", held in Buenos Aires, Argentina, October 26-30 2009.