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Updated: Aug 8, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Formation of supermassive black holes through fragmentation of torodial supermassive stars
Burkhard Zink1, Nikolaos Stergioulas, Ian Hawke
1Max-Planck-Institut für Astrophysik, Karl Schwarzschild-Strasse 1, 85741 Garching bei München, Germany.
Abstract:
We investigate new paths to supermassive black hole formation by considering the general relativistic evolution of a differentially rotating polytrope with a toroidal shape. We find that this polytrope is unstable to nonaxisymmetric modes, which leads to a fragmentation into self-gravitating, collapsing components. In the case of one such fragment, we apply a simplified adaptive mesh refinement technique to follow the evolution to the formation of an apparent horizon centered on the fragment. This is the first study of the onset of nonaxisymmetric dynamical instabilities of supermassive stars in full general relativity.
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