Journal of High Energy Physics

, 2010:48 | Cite as

On smoothness of black saturns

  • Piotr T. ChruścielEmail author
  • Michał Eckstein
  • Sebastian J. Szybka
Open Access


We prove smoothness of the domain of outer communications (d.o.c.) of the Black Saturn solutions of Elvang and Figueras. We show that the metric on the d.o.c. extends smoothly across two disjoint event horizons with topology \( \mathbb{R} \times {S^3} \) and \( \mathbb{R} \times {S^1} \times {S^2} \). We establish stable causality of the d.o.c. when the Komar angular momentum of the spherical component of the horizon vanishes, and present numerical evidence for stable causality in general.


Black Holes Spacetime Singularities 


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© The Author(s) 2010

Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

Open AccessThis is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (, which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • Piotr T. Chruściel
    • 1
    Email author
  • Michał Eckstein
    • 2
  • Sebastian J. Szybka
    • 3
  1. 1.Gravitational PhysicsUniversity of ViennaViennaAustria
  2. 2.M.Smoluchowski Institute of PhysicsJagellonian UniversityKrakwPoland
  3. 3.Astronomical ObservatoryJagellonian UniversityKrakówPoland

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