Equilibrium configurations of perfect fluid in Reissner-Nordström-de Sitter spacetimes

Details Equilibrium configurations of perfect fluid in Reissner-Nordström-de Sitter spacetimes Equilibrium configurations of perfect fluid in Reissner-Nordström-de Sitter spacetimes

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ragt.meet..433s&link_type=abstract

Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, 15-19/19-21 September, 2006/2007, Hradec nad Moravicí, O

Physics

Scientific paper

Marginally stable perfect fluid tori with uniform distribution of specific angular momentum are determined in the Reissner-Nordström-de Sitter black-hole and naked-singularity spacetimes. Perfect fluid toroidal configurations are allowed only in the spacetimes admitting existence of stable circular geodesics. The configurations with equipotential surfaces crossing itself in a cusp allow accretion (inner cusp) and/or excretion (outer cusp) of matter from the toroidal configuration. The classification of the Reissner-Nordström-de Sitter spacetimes according to the properties of the marginally stable tori is given.

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