JET DYNAMICS IN BLACK-HOLE FIELDS - A COLLIMATION MECHANISM

Citation
F. Defelice et L. Carlotto, JET DYNAMICS IN BLACK-HOLE FIELDS - A COLLIMATION MECHANISM, The Astrophysical journal, 481(1), 1997, pp. 116-126
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
0004637X
Volume
481
Issue
1
Year of publication
1997
Part
1
Pages
116 - 126
Database
ISI
SICI code
0004-637X(1997)481:1<116:JDIBF->2.0.ZU;2-V
Abstract
We study the axial collimation of the vortical geodesics in the held o f a rotating black hole. This effect manifests itself when the energy and angular momenta of the particles that move on those geodesics vary slowly in dynamical time. In this paper we deduce the constraints tha t ensure collimation and show how the latter arises when the orbital p arameters are perturbed by a given electromagnetic field or by pressur e gradients.