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Stability of the puncture method with a generalized BSSN formulation
Helvi Witek, David Hilditch, Ulrich Sperhake
The puncture method for dealing with black holes in the numerical simulation of vacuum spacetimes is remarkably successful when combined with the BSSN formulation of the Einstein e…
Head-on collisions of unequal mass black holes in D=5 dimensions
Helvi Witek, Vitor Cardoso, Leonardo Gualtieri +3
We study head-on collisions of unequal mass black hole binaries in D=5 space-time dimensions, with mass ratios between 1:1 and 1:4. Information about gravitational radiation is ext…
Numerical relativity for D dimensional space-times: head-on collisions of black holes and gravitational wave extraction
Helvi Witek, Miguel Zilhao, Leonardo Gualtieri +4
Black objects in higher dimensional space-times have a remarkably richer structure than their four dimensional counterparts. They appear in a variety of configurations (e.g. black…
Black holes in a box: towards the numerical evolution of black holes in AdS
Helvi Witek, Vitor Cardoso, Carlos Herdeiro +3
The evolution of black holes in "confining boxes" is interesting for a number of reasons, particularly because it mimics the global structure of Anti-de Sitter geometries. These ar…
Numerical relativity for D dimensional axially symmetric space-times: formalism and code tests
Miguel Zilhao, Helvi Witek, Ulrich Sperhake +4
The numerical evolution of Einstein's field equations in a generic background has the potential to answer a variety of important questions in physics: from applications to the gaug…