AGN jet physics and apparent opening angles
Abstract
We present a new method to measure Gamma*theta_j in flux-limited samples of active galactic nuclei (AGN) jets, where Gamma is the bulk Lorentz factor and theta_j is the jet's half-opening angle. The Gamma*theta_j parameter is physically important for models of jet launching, and also determines the effectiveness of jet instabilities and magnetic reconnection. We measure Gamma*theta_j by analyzing the observed distribution of apparent opening angles in very long baseline interferometry (VLBI) flux-limited samples of jets, given some prior knowledge of the active galactic nuclei (AGN) radio luminosity function. We then apply this method to the MOJAVE flux-limited sample of radio loud objects and find Gamma*theta_j = 0.1 +- 0.03, which implies that AGN jets are subject to a variety of physical processes that require causal connection.
Cite
@article{arxiv.1301.5751,
title = {AGN jet physics and apparent opening angles},
author = {Eric Clausen-Brown and Tuomas Savolainen and Alexander B. Pushkarev and Yuri Y. Kovalev and Matthew L. Lister},
journal= {arXiv preprint arXiv:1301.5751},
year = {2013}
}
Comments
6 pages. Proceedings of the 11th EVN Symposium. Bordeaux (France), October 2012