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@article{45003, author = {Kovář, Jiří and Slaný, Petr and Stuchlík, Zdeněk}, article_location = {US - Spojené státy americké}, article_number = {8}, doi = {http://dx.doi.org/10.1103/PhysRevD.84.084002}, keywords = {Toroidal magnetic-field, compact object, thick discs, cosmological constant, magnetofluid}, language = {eng}, issn = {1550-7998}, journal = {Physical Review D}, title = {Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes}, volume = {84}, year = {2011} }
TY - JOUR ID - 45003 AU - Kovář, Jiří - Slaný, Petr - Stuchlík, Zdeněk PY - 2011 TI - Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes JF - Physical Review D VL - 84 IS - 8 SP - 1-15 EP - 1-15 SN - 15507998 KW - Toroidal magnetic-field, compact object, thick discs, cosmological constant, magnetofluid N2 - 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 ER -
KOVÁŘ, Jiří, Petr SLANÝ and Zdeněk STUCHLÍK. Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes. \textit{Physical Review D}. US - Spojené státy americké, 2011, vol.~84, No~8, p.~1-15, 14 pp. ISSN~1550-7998. Available from: https://dx.doi.org/10.1103/PhysRevD.84.084002.
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