IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
artículos
Título:
A note on computations of angular momentum and its flux in numerical relativity
Autor/es:
EMANUEL GALLO; LUIS LEHNER; OSVALDO M. MORESCHI
Revista:
CLASSICAL AND QUANTUM GRAVITY
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2009 vol. 26 p. 480021 - 480029
ISSN:
0264-9381
Resumen:
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.