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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

New regular black hole solutions and other electrically charged compact objects with a de Sitter core and a matter layer

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Masa, Angel D. D. [1] ; de Oliveira, Enesson S. [1] ; Zanchin, Vilson T. [1]
Total Authors: 3
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, BR-09210580 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Web of Science Citations: 0

The main objective of this work is the construction of regular black hole solutions in the context of the Einstein-Maxwell theory. The strategy is to match an interior regular solution to an exterior electrovacuum solution. With this purpose, we first write explicitly the Einstein field equations for the interior regular region. We take an electrically charged nonisotropic fluid, which presents spherical symmetry and a de Sitter type equation of state, where the radial pressure p(r) is equal to the negative of energy density rho, p(r) = -rho. Then, two solutions for the Einstein equations are built, a regular interior solution for the region with matter satisfying a de Sitter equation of state, and an external solution for the region outside the matter, that corresponds to the Reissner-Nordstrom metric. To complete the solution we apply the Darmois-Israel junction conditions with a timelike thin shell at the matching surface. It is assumed that the matching surface is composed by a thin shell of matter, i.e. a surface layer in the form of a perfect fluid obeying a barotropic equation of state, P = omega sigma, P and sigma being the intrinsic pressure and energy density of the shell, respectively, and omega a constant parameter. We show that there are electrically charged regular black hole solutions and other compact objects for specific choices of omega and of the other parameters of the model. Some properties the objects are investigated. (AU)

FAPESP's process: 15/26858-7 - Classical and quantum aspects of black hole perturbations
Grantee:Enesson dos Santos de Oliveira
Support type: Scholarships in Brazil - Doctorate