BONNOR-TYPE BLACK DIHOLE SOLUTION IN BRANS–DICKE–MAXWELL THEORY

Author:

KIM HONGSU12,LEE HYUNG MOK1

Affiliation:

1. Astronomy Program, SEES, Seoul National University, Seoul, 151-742, Korea

2. International Center for Astrophysics, Korea Astronomy and Space Science Institute, Daejeon, 305-348, Korea

Abstract

It was originally thought that Bonnor's solution in Einstein–Maxwell theory describes a singular point-like magnetic dipole. Lately, however, it has been demonstrated that indeed it may describe a black dihole, i.e. a pair of static, oppositely-charged extremal black holes with regular horizons. Motivated particularly by this new interpretation, in the present work, the construction and extensive analysis of a solution in the context of the Brans–Dicke–Maxwell theory representing a black dihole are attempted. It has been known for some time that the solution-generating algorithm of Singh and Rai produces stationary, axisymmetric, charged solutions in Brans–Dicke–Maxwell theory from the known such solutions in Einstein–Maxwell theory. Thus this algorithm of Singh and Rai's is employed in order to construct a Bonnor-type magnetic black dihole solution in Brans–Dicke–Maxwell theory from the known Bonnor solution in Einstein–Maxwell theory. The peculiar features of the new solution including internal infinity nature of the symmetry axis and its stability issue have been discussed in full detail.

Publisher

World Scientific Pub Co Pte Lt

Subject

Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics

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