J
2011
Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes
KOVÁŘ, Jiří, Petr SLANÝ and Zdeněk STUCHLÍK
Basic information
Original name
Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes
Edition
Physical Review D, US - Spojené státy americké, 2011, 1550-7998
Other information
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Philosophy and Science in Opava
Keywords in English
Toroidal magnetic-field, compact object, thick discs, cosmological constant, magnetofluid
Tags
International impact, Reviewed
Links
LC06014, research and development project. MSM4781305903, plan (intention).
V originále
Astrophysical fluids may acquire nonzero electrical charge because of strong irradiation or charge separation in a magnetic field. In this case, electromagnetic and gravitational forces may act together and produce new equilibrium configurations, which are different from the uncharged ones. Following our previous studies of charged test particles and uncharged perfect fluid tori encircling compact objects, we introduce here a simple test model of a charged perfect fluid torus in strong gravitational andelectromagnetic fields. In contrast to ideal magnetohydrodynamic models, we consider here the opposite limit of negligible conductivity, where the charges are tied completely to the moving matter. This is an extreme limiting case which can provide a useful reference against which to compare subsequent more complicated astrophysically motivated calculations. To clearly demonstrate the features of our model, we construct three-dimensional axisymmetric charged toroidal configurations aroun
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