Collimated jet magnetospheres around rotating black holes General relativistic force-free 2D equilibrium
1997; EDP Sciences; Volume: 319; Issue: 3 Linguagem: Inglês
ISSN
1432-0746
Autores Tópico(s)Pulsars and Gravitational Waves Research
ResumoThere is common belief that superluminal jet mo- tion from active galactic nuclei and from galactic high energy sources originates in the magnetized environment of a rotating black hole surrounded by an accretion disk. The structure of these jet magnetospheres follows from so- lutions of the so called stream equation for the force-balance between axisymmetric magnetic surfaces. In this paper, two- dimensional force-free solutions of the stream equation are nu- merically obtained in a general relativistic context (3+1 formal- ism on Kerr geometry). We apply the numerical method of nite elements. In this approach, the regularity conditions along the light surfaces are automatically satised. After an iterative adjustment of the poloidal current distribution and the shape of the jet boundary, we nd magnetic eld congurations without kinks at the outer light surface. The solutions extend from the inner light surface of the Kerr blackholetotheasymptoticregimeofacylindricallycollimated jet with a nite radius. Different magnetic flux distributions along the disk surface were investigated. There is strong evi- dence for a hollow jet structure.
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