Estimating Energy-Momentum and Angular Momentum Near Null Infinity

Details Estimating Energy-Momentum and Angular Momentum Near Null Infinity Estimating Energy-Momentum and Angular Momentum Near Null Infinity

2009-07-20

arxiv.org/abs/0907.3461v2

Phys.Rev.D81:084001,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

26 pp. Corrections to the section on evolution. Version accepted by Phys. Rev. D

Scientific paper

10.1103/PhysRevD.81.084001

The energy-momentum and angular momentum contained in a spacelike two-surface of spherical topology are estimated by joining the two-surface to null infinity via an approximate no-incoming-radiation condition. The result is a set of gauge-invariant formulas for energy-momentum and angular momentum which should be applicable to much numerical work; it also gives estimates of the finite-size effects.

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