Electrically charged fluids with pressure in Newtonian gravitation and general relativity in d spacetime dimensions: theorems and results for Weyl type systems

Abstract

Previous theorems concerning Weyl type systems, including Majumdar-Papapetrou systems, are generalized in two ways, namely, we take these theorems into d spacetime dimensions ($\mathrm{d}\ge 4$), and we also consider the very interesting Weyl-Guilfoyle systems, i.e., general relativistic charged fluids with nonzero pressure. In particular within Newton-Coulomb theory of charged gravitating fluids, a theorem by Bonnor (1980) in three-dimensional space is generalized to arbitrary $(\mathrm{d}-1)>3$ space dimensions. Then, we prove a new theorem for charged gravitating fluid systems in which we find the condition that the charge density and the matter density should obey. Within general relativity coupled to charged dust fluids, a theorem by De and Raychaudhuri (1968) in four-dimensional spacetimes in rendered into arbitrary $\mathrm{d}>4$ dimensions. Then a theorem, new in $\mathrm{d}=4$ and $\mathrm{d}>4$ dimensions, for Weyl-Guilfoyle systems, is stated and proved, in which we find the condition that the charge density, the matter density, the pressure, and the electromagnetic energy density should obey. This theorem comprises, as particular cases, a theorem by Gautreau and Hoffman (1973) and results in four dimensions by Guilfoyle (1999). Upon connection of an interior charged solution to an exterior Tangherlini solution (i.e., a Reissner-Nordström solution in d-dimensions), one is able to give a general definition for gravitational mass for this kind of relativistic systems and find a mass relation with the several quantities of the interior solution. It is also shown that for sources of finite extent the mass is identical to the Tolman mass.

arXiv comment27 pages

References in corpus (5)

• Static charged perfect fluid spheres in general relativity
• Interior Weyl-type Solutions of the Einstein-Maxwell Field Equations
• Bonnor stars in d spacetime dimensions
• A class of exact solutions of Einstein's field equations in higher dimensional spacetimes, d$\ge 4$: Majumdar-Papapetrou solutions
• Static charged perfect fluid with the Weyl-Majumdar relation

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• Extra dimensions' influence on the equilibrium and radial stability of strange quark stars
• Plethora of relativistic charged spheres: The full spectrum of Guilfoyle's static, electrically charged spherical solutions
• Higher Dimensional Cylindrical or Kasner Type Electrovacuum Solutions
• Fluid pulsation modes from strange stars in a higher-dimensional space-time
• Stability of electrically charged stars, regular black holes, quasiblack holes, and quasinonblack holes
• Charge Influence On Mini Black Hole's Cross Section
• Rotating charged fluids: Theorems and results for Weyl-type systems