Comparing Rees-Sciama and Integrated Sachs Wolfe effects

Details Comparing Rees-Sciama and Integrated Sachs Wolfe effects Comparing Rees-Sciama and Integrated Sachs Wolfe effects

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..841..594s&link_type=abstract

A CENTURY OF RELATIVITY PHYSICS: ERE 2005; XXVIII Spanish Relativity Meeting. AIP Conference Proceedings, Volume 841, pp. 594-5

Physics

Mathematical And Relativistic Aspects Of Cosmology, Relativity And Gravitation

Scientific paper

Both the Rees-Sciama (RS) and the Integrated Sachs-Wolfe (ISW) effects are produced by the peculiar gravitational potential of cosmological inhomogeneities. This potential fully defines a scalar perturbation of the Robertson-Walker metric in the longitudinal gauge. The RS (ISW) effect is produced by nonlinear (linear) structures which grow as a result of gravitational instability. The anisotropies corresponding to these two effects are compared for a wide range of angular scales. N-body simulations and a certain ray-tracing procedure -recently proposed- are used to study the RS effect.

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