On computations of angular momentum and its flux in numerical relativity

Details On computations of angular momentum and its flux in numerical relativity On computations of angular momentum and its flux in numerical relativity

2008-10-03

arxiv.org/abs/0810.0666v3

Class. Quantum Grav. 26 (2009) 048002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages. Minor improvements . To appear in Class. Quantum Grav

Scientific paper

The purpose of this note is to point out ambiguities that appear in the
calculation of angular momentum and its radiated counterpart when some simple
formulae are used to compute them. We illustrate, in two simple different
examples, how incorrect results can be obtained with them. Additionally, we
discuss the magnitude of possible errors in well known situations.

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