3 papers
gr-qc2026
The balance problem for aligned black holes
Jörg Hennig
An intriguing open problem in general relativity is whether a stationary equilibrium configuration of multiple, physically relevant black holes can exist. In such a hypothetical se…
gr-qc2025
Soliton methods and the black hole balance problem
Jörg Hennig
This article is an extended version of a presentation given at KOZWaves 2024: The 6th Australasian Conference on Wave Science, held in Dunedin, New Zealand. Soliton methods were in…
gr-qc2024
Smooth Gowdy-symmetric generalised Taub-NUT solutions with polynomial initial data
Jörg Hennig
We consider smooth Gowdy-symmetric generalised Taub-NUT solutions, a class of inhomogeneous cosmological models with spatial three-sphere topology. They are characterised by existe…