Comparison of the Sachs-Wolfe Effect for Gaussian and Non-Gaussian Fluctuations

Details Comparison of the Sachs-Wolfe Effect for Gaussian and Non-Gaussian Fluctuations Comparison of the Sachs-Wolfe Effect for Gaussian and Non-Gaussian Fluctuations

1992-08-28

arxiv.org/abs/gr-qc/9208011v1

Phys.Rev.D47:409-415,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages

Scientific paper

10.1103/PhysRevD.47.409

A consequence of non-Gaussian perturbations on the Sachs-Wolfe effect is studied. For a particular power spectrum, predicted Sachs-Wolfe effects are calculated for two cases: Gaussian (random phase) configuration, and a specific kind of non-Gaussian configuration. We obtain a result that the Sachs-Wolfe effect for the latter case is smaller when each temperature fluctuation is properly normalized with respect to the corresponding mass fluctuation ${\delta M\over M}(R)$. The physical explanation and the generality of the result are discussed.

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