# Corotating two-body system of identical Kerr sources

## TL;DR

This paper derives an exact solution for a binary system of identical corotating Kerr black holes, analyzing their thermodynamics and extreme limit configurations.

## Contribution

It introduces a new 3-parametric asymptotically flat solution for two corotating Kerr sources with explicit horizon properties.

## Key findings

- Explicit horizon functional form in terms of physical parameters
- Thermodynamical properties expressed through concise formulas
- Extreme limit case as a special subclass of the Kinnersley-Chitre metric

## Abstract

A binary system of identical corotating Kerr sources is studied after deriving the corresponding 3-parametric asymptotically flat exact solution. Both sources are apart from each other by means of a massless strut (conical singularity). In the context of black holes, the analytical functional form of each horizon {\sigma} is expressed in terms of arbitrary Komar physical parameters: mass M, angular momentum J (with parallel spin), and the coordinate distance R between the center of each horizon. Later on, all the thermodynamical properties related to the horizon are depicted by concise formulae. Finally, the extreme limit case is obtained as a 2-parametric subclass of Kinnersley-Chitre metric.