Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-03-10
Phys.Rev.D74:064003,2006
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
13 pages; incorporated material from gr-qc/0512167
Scientific paper
10.1103/PhysRevD.74.064003
We study the numerical propagation of waves through future null infinity in a conformally compactified spacetime. We introduce an artificial cosmological constant, which allows us some control over the causal structure near null infinity. We exploit this freedom to ensure that all light cones are tilted outward in a region near null infinity, which allows us to impose excision-style boundary conditions in our finite difference code. In this preliminary study we consider electromagnetic waves propagating in a static, conformally compactified spacetime.
Fiske David R.
Misner Charles W.
van Meter James R.
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