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Equilibrium configurations of charged fluid around Kerr black hole

Autor: Trova, A., Schroven, K., Hackmann, E., Karas, V., Kovar, J., Slany, P.

Publikováno v: Phys. Rev. D 97, 104019 (2018)

Equilibrium configurations of electrically charged perfect fluid surrounding a central rotating black hole endowed with a test electric charge and embedded in a large-scale asymptotically uniform magnetic field are presented. Following our previous s

Externí odkaz: http://arxiv.org/abs/1803.02262

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Plunging neutron stars as origin of organised magnetic field in galactic nuclei

Autor: Karas, V., Kopacek, O., Kunneriath, D., Zajacek, M., Araudo, A., Eckart, A., Kovar, J.

Publikováno v: Contributions of the Astronomical Observatory Skalnate Pleso, vol. 47, no. 2, p. 124-132 (2017)

Black holes cannot support their own internal magnetic field like, for example, compact stars can. Despite this fact observations indicate that event horizons of supermassive black holes (SMBH) are threaded by field lines along which plasma streams f

Externí odkaz: http://arxiv.org/abs/1705.09820

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Electrically charged matter in permanent rotation around magnetized black hole: A toy model for self-gravitating fluid tori

Autor: Trova, A., Karas, V., Slany, P., Kovar, J.

We present an analytical approach for the equilibrium of a self-gravitating charged fluid embedded in a spherical gravitational and dipolar magnetic fields produced by a central mass. Our scheme is proposed, as a toy-model, in the context of gaseous/

Externí odkaz: http://arxiv.org/abs/1608.03427

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Charged tori in spherical gravitational and dipolar magnetic fields

Autor: Slany, P., Kovar, J., Stuchlik, Z., Karas, V.

Publikováno v: ApJS, 205, 3 (2013)

A Newtonian model of non-conductive, charged, perfect fluid tori orbiting in combined spherical gravitational and dipolar magnetic fields is presented and stationary, axisymmetric toroidal structures are analyzed. Matter in such tori exhibits a purel

Externí odkaz: http://arxiv.org/abs/1302.2356

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Pseudo-Newtonian and general relativistic barotropic tori in Schwarzschild-de Sitter spacetimes

Autor: Stuchlik, Z., Slany, P., Kovar, J.

Publikováno v: Class.Quant.Grav.26:215013,2009

Pseudo-Newtonian gravitational potential introduced in spherically symmetric black-hole spacetimes with a repulsive cosmological constant is tested for equilibrium toroidal configurations of barotropic perfect fluid orbiting the black holes. Shapes a

Externí odkaz: http://arxiv.org/abs/0910.3184

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