2012/09/30 by Antonio C. Gutiérrez-Piñeres, Gonzalo García-Reyes, Guillermo A. González · 1 citation
Physics and Astronomy · #gr-qc
paper · pdf · doi:10.1142/s0218271814500102
published as Int. J. Mod. Phys. D, Vol. 23, No. 1 (2013), pags. 1450010-1 - 1450010-23 · 17 pages, 14 figures. arXiv admin note: text overlap with arXiv:gr-qc/0409109 by other authors
arxiv created 2013/12/06 · arxiv updated 2013/12/09
The exact superposition of a central static black hole with surrounding thin disk in presence of a magnetic field is investigated. We consider two models of disk, one of infinite extension based on a Kuzmin-Chazy-Curzon metric and other finite based on the first Morgan-Morgan disk. We also analyze a simple model of active galactic nuclei consisting of black hole, a Kuzmin-Chazy-Curzon disk and two rods representing jets, in presence of magnetic field. To explain the stability of the disks we consider the matter of the disk made of two pressureless streams of counterrotating charged particles (counterrotating model) moving along electrogeodesic. Using the Rayleigh criterion we derivate for circular orbits the stability conditions of the particles of the streams. The influence of the magnetic field on the matter properties of the disk and on its stability are also analyzed.