Počet záznamů: 1

Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes

  1. 1.
    0365019 - ASU-R 2012 RIV US eng J - Článek v odborném periodiku
    Kovář, J. - Slaný, P. - Stuchlík, Z. - Karas, Vladimír - Cremaschini, C. - Miller, J. C.
    Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes.
    Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 84, č. 8 (2011), 084002/1-084002/14 ISSN 1550-7998
    Grant CEP: GA MŠk(CZ) LC06014; GA ČR GA205/07/0052
    Výzkumný záměr: CEZ:AV0Z10030501
    Klíčová slova: black holes
    Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
    Impakt faktor: 4.558, rok: 2011

    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 and electromagnetic 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 around Reissner-Nordström black holes and compare them with equivalent configurations of electrically neutral tori.
    Trvalý link: http://hdl.handle.net/11104/0200361