The Newman-Penrose quantities and the double-series approximation method (Q2704177)
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scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | The Newman-Penrose quantities and the double-series approximation method |
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The Newman-Penrose quantities and the double-series approximation method (English)
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19 March 2001
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relativity
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Newman-Penrose formalism
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Bondi-Sachs expansion
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The double-series method is used to investigate the Newman-Penrose quantities (NPQ) in the case of an axially symmetric isolated source which oscillates for a finite time. In this case there is a single NPQ. It is found that in part of spacetime this quantity is not defined because of the divergence of the Bondi-Sachs expansion used to derive it. The NPQ is conserved where it is defined, but the author argues that the conservation has little physical importance.
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