On the Rees-Sciama effect: maps and statistics

Details On the Rees-Sciama effect: maps and statistics On the Rees-Sciama effect: maps and statistics

2006-05-29

arxiv.org/abs/astro-ph/0605704v1

Mon.Not.Roy.Astron.Soc.370:1849-1858,2006

Astronomy and Astrophysics

Astrophysics

11 pages, 13 figures, to appear in MNRAS

Scientific paper

10.1111/j.1365-2966.2006.10607.x

Small maps of the Rees-Sciama (RS) effect are simulated by using an appropriate N-body code and a certain ray-tracing procedure. A method designed for the statistical analysis of cosmic microwave background (CMB) maps is applied to study the resulting simulations. These techniques, recently proposed --by our team-- to consider lens deformations of the CMB, are adapted to deal with the RS effect. This effect and the deviations from Gaussianity associated to it seem to be too small to be detected in the near future. This conclusion follows from our estimation of both the RS angular power spectrum and the RS reduced n-direction correlation functions for n<7.

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