Kenneth A. Dennison
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View article: Dynamical perturbations of black-hole punctures: effects of slicing conditions
Dynamical perturbations of black-hole punctures: effects of slicing conditions Open
While numerous numerical relativity simulations adopt a 1+log slicing condition, shock-avoiding slicing conditions form a viable and sometimes advantageous alternative. Despite both conditions satisfying similar equations, recent numerical…
View article: Bona-Massó slices of Reissner-Nordström spacetimes
Bona-Massó slices of Reissner-Nordström spacetimes Open
Motivated by recent numerical relativity simulations of charged black holes and their interactions, we explore the properties of common slicing conditions in Reissner-Nordström spacetimes. Specifically, we consider different choices for th…
View article: Maximally rotating supermassive stars at the onset of collapse: effects of gas pressure
Maximally rotating supermassive stars at the onset of collapse: effects of gas pressure Open
The ‘direct collapse’ scenario has emerged as a promising evolutionary track for the formation of supermassive black holes early in the Universe. In an idealized version of such a scenario, a uniformly rotating supermassive star spinning a…
View article: Schwarzschild–de Sitter spacetimes, McVittie coordinates, and trumpet geometries
Schwarzschild–de Sitter spacetimes, McVittie coordinates, and trumpet geometries Open
Trumpet geometries play an important role in numerical simulations of black\nhole spacetimes, which are usually performed under the assumption of asymptotic\nflatness. Our Universe is not asymptotically flat, however, which has motivated\n…