The trumpet solution from spherical gravitational collapse with puncture gauges

Details The trumpet solution from spherical gravitational collapse with puncture gauges The trumpet solution from spherical gravitational collapse with puncture gauges

2010-12-16

arxiv.org/abs/1012.3703v2

Phys.Rev.D83:064022,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Scientific paper

10.1103/PhysRevD.83.064022

We investigate the stationary end-state obtained by evolving a collapsing spherical star with the gauges routinely adopted to study puncture black holes. We compare the end-state of the collapse with the trumpet solution found in the evolution of a single wormhole slice and show that the two solutions closely agree. We demonstrate that the agreement is caused by the use of the Gamma-driver shift condition, which allows the matter to fall inwards into a region of spacetime that is not resolved by the numerical grid, and which simultaneously finds the stationary coordinates of the trumpet outside the matter.

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