Eur. Phys. J. C (2018) 78: 71
https://doi.org/10.1140/epjc/s10052-018-5550-5

Regular Article - Theoretical Physics

Binary black hole in a double magnetic monopole field

¹ Department of Physics, Utah State University, 4415 Old Main Hill Road, UT, 84322, Logan, USA
² Max Planck Institute for Gravitational Physics, Am Mühlenberg 1, Potsdam, 14476, Germany

^* e-mail: maria.rodriguez@usu.edu

Received: 15 August 2017
Accepted: 13 January 2018
Published online: 25 January 2018

Abstract

Ambient magnetic fields are thought to play a critical role in black hole jet formation. Furthermore, dual electromagnetic signals could be produced during the inspiral and merger of binary black hole systems. In this paper, we derive the exact solution for the electromagnetic field occurring when a static, axisymmetric binary black hole system is placed in the field of two magnetic or electric monopoles. As a by-product of this derivation, we also find the exact solution of the binary black hole configuration in a magnetic or electric dipole field. The presence of conical singularities in the static black hole binaries represent the gravitational attraction between the black holes that also drag the external two monopole field. We show that these off-balance configurations generate no energy outflows.