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The gravitational light shift and the Sachs-Wolfe effect
被引:0
|作者:
César Merlín
Marcelo Salgado
机构:
[1] Universidad Nacional Autónoma de México,Instituto de Ciencias Nucleares
来源:
关键词:
Gravitational light shift;
3+1 formalism;
Sachs-Wolfe effect;
D O I:
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学科分类号:
摘要:
Using a 3+1 decomposition of spacetime, we derive a new formula to compute the gravitational light shifts as measured by two observers which are normal to the spacelike hypersurfaces defining the foliation. This formula is quite general and is also independent of the existence of Killing fields. Known examples are considered to illustrate the usefulness of the formula. In particular, we focus on the Sachs-Wolfe effect that arises in a perturbed Friedman-Robertson-Walker cosmology.
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页码:2701 / 2712
页数:11
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