Matter/Microwave Correlations in an Open Universe

Details Matter/Microwave Correlations in an Open Universe Matter/Microwave Correlations in an Open Universe

1996-02-28

arxiv.org/abs/astro-ph/9602150v2

Phys.Rev. D54 (1996) 4169-4170

Astronomy and Astrophysics

Astrophysics

Re-titled and revised slightly for the Brief Reports section of Phys. Rev. D

Scientific paper

10.1103/PhysRevD.54.4169

In an intriguing recent paper, Crittenden and Turok proposed cross-correlating the cosmic microwave background (CMB) with tracers of the matter density to probe the existence of a cosmological constant. Here I emphasize that a similar cross-correlation arises in an open Universe and, depending on the redshift distribution of the tracer population and the matter density, may be comparable to or stronger than that in a flat cosmological-constant Universe with the same matter density. The two cases can be distinguished through cross-correlation with tracer populations with different redshift distributions.

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