Energy Extraction from Black Holes
Abstract
In this lecture I give an introduction to the rotational energy extraction of black holes by the electromagnetic Blandford-Znajek process and the generation of relativistic jets. After some basic material on the electrodynamics of black hole magnetospheres, we derive the most important results of Blandford and Znajek by making use of Kerr-Schild coordinates, which are regular on the horizon. In a final part we briefly describe results of recent numerical simulations of accretion flows on rotating black holes, the resulting large-scale outflows, and the formation of collimated relativistic jets with high Lorentz factors.
Keywords
Cite
@article{arxiv.0709.3895,
title = {Energy Extraction from Black Holes},
author = {Norbert Straumann},
journal= {arXiv preprint arXiv:0709.3895},
year = {2009}
}
Comments
19 pages, 5 figures,invited lecture given at the III Mexican Meeting on Mathematical and Experimental Physics, September 10-14, 2007 at El Colegio Nacional; to be published by the American Institute of Physics