A Kaluza-Klein Subttractor

TL;DR

This paper extends the understanding of attraction basins and their boundaries to rotating extremal black holes in Kaluza-Klein theory, revealing new exact solutions and the influence of rotation on basin geometry.

Contribution

It introduces a method to find exact solutions spanning the attraction basin for rotating black holes using symmetries, generalizing previous non-rotating results.

Findings

Exact solutions span the attraction basin for rotating black holes.

Boundaries of the basin are spinning versions of subttractor geometries.

The shape of the attraction basin varies significantly with the theory.

Abstract

We generalize the results of arXiv:1212.1875 and arXiv:1212.6919 on attraction basins and their boundaries to the case of a specific class of rotating black holes, namely the ergo-free branch of extremal black holes in Kaluza-Klein theory. We find that exact solutions that span the attraction basin can be found even in the rotating case by appealing to certain symmetries of the equations of motion. They are characterized by two asymptotic parameters that generalize those of the non-rotating case, and the boundaries of the basin are spinning versions of the (generalized) subttractor geometry. We also give examples to illustrate that the shape of the attraction basin can drastically change depending on the theory.