Title
The structure of charged d-dimensional stars: Comparing different equations of state
Date Issued
01 December 2009
Access level
metadata only access
Resource Type
conference paper
Author(s)
Zanchin V.T.
Universidade Federal do ABC
Abstract
In this work we review some of the general properties of static charged fluid in the context of the Einstein-Maxwell theory with cosmological term in four and higher dimensions. The metric is assumed to have a general form such that the geometry of the spatial section of the spacetime can be spherical, planar or hyperbolic. As first study we obtain the Tolman-Oppenheimer-Volkoff (TOV) equation, which describe the hydrostatic equilibrium, for a charged fluid in d-dimensional spacetime with cosmological constant for different geometries. In order to solve the resulting TOV equations, we need to provide an equation of state and an additional constraint for the charge density. For simplicity, the charge density is assumed to be proportional to the energy density, and we test such a set up for different charge fractions. We present and analyze numerical results showing the dependence of the star structure on the particular equation of state for two particular choices of equations of polytropic type. Copyright © owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Language
English
OCDE Knowledge area
Astronomía
Geociencias, Multidisciplinar
Scopus EID
2-s2.0-84883618749
Source
Proceedings of Science
ISSN of the container
18248039
Conference
5th International School on Field Theory and Gravitation, ISFTG 2009
Sources of information:
Directorio de Producción Científica
Scopus