Publication date: Dec 2014
Abstract:
We present Newtonian model of non-conductive charged perfect fluid tori
orbiting in combined spherical gravitational and dipolar magnetic
fields, focusing on stationary, axisymmetric toroidal structures. Matter
in such tori exhibits a purely circulatory motion and the resulting
convection carries charges into permanent rotation around the symmetry
axis. As a main result we demonstrate possible existence of off-
equatorial charged tori and equatorial tori with cusps enabling outflows
of matter from the torus also in Newtonian regime. From astrophysical
point of view, our investigation can provide an insight into processes
determining vertical structure of dusty tori surrounding accretion
discs.
Authors:
Slaný, Petr; Kovář, Jiří; Stuchlík, Zdeněk; Karas, Vladimír;