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- W2890152361 abstract "In numerical relativity, spacetimes involving compact strongly gravitating objects are constructed as numerical solutions of Einstein's equations. Success of such a process strongly depends on the availability of appropriate coordinates, which are typically constructed dynamically. A very robust coordinate choice is a so-called moving puncture gauge, commonly used for numerical simulations of black hole spacetimes. Nevertheless it is known to fail for evolving near-critical Brill wave data. We construct a new `quasi-maximal' slicing condition and demonstrate that it exhibits better behavior for such data. This condition is based on the 1+log slicing with an additional source term derived from maximal slicing. It is relatively simple to implement in existing moving puncture codes and computationally inexpensive. We also illustrate the properties of constructed spacetimes based on gauge-independent quantities in compactified spacetime diagrams. These invariants are also used to show how created black holes settle down to a Schwarzschild black hole." @default.
- W2890152361 created "2018-09-27" @default.
- W2890152361 creator A5068352728 @default.
- W2890152361 creator A5083469140 @default.
- W2890152361 date "2018-10-08" @default.
- W2890152361 modified "2023-10-12" @default.
- W2890152361 title "Slicing conditions for axisymmetric gravitational collapse of Brill waves" @default.
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- W2890152361 doi "https://doi.org/10.1088/1361-6382/aae1bc" @default.
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