Open AccessOn the Rees–Sciama effect: maps and statistics
Author(s) -
Puchades N.,
Fullana M. J.,
Arnau J. V.,
Sáez D.
Publication year - 2006
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2006.10607.x
Subject(s) - physics , cosmic microwave background , astrophysics , spectral density , tracing , statistical physics , statistics , optics , mathematics , anisotropy , computer science , operating system
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 ≤ 6 .