Overview of Secondary Anisotropies of the CMB
Abstract
Description
While the major contribution to the Cosmic Microwave Background (CMB) anisotropies are the sought-after primordial fluctuations produced at the surface of last scattering, other effects produce secondary fluctuations at lower redshifts. These secondary fluctuations must be carefully accounted for, in order to isolate primordial fluctuations. In addition, they are interesting in their own right, since they provide a wealth of information on the geometry and local properties of the universe. Here, I survey the different sources of secondary anisotropies and extragalactic foregrounds of the CMB. I show their relative importance on the multipole-frequency plane. I discuss in particular their impact in the future CMB missions MAP and Planck Surveyor.
9 LaTeX pages, 1 postscript figure, 1 table. Uses paspconf.sty. Color figure and further links available at http://www.astro.princeton.edu/~refreg/ Invited review in "Microwave Foregrounds", eds. A. de Oliveira-Costa & M. Tegmark (ASP, San Francisco, 1999)
9 LaTeX pages, 1 postscript figure, 1 table. Uses paspconf.sty. Color figure and further links available at http://www.astro.princeton.edu/~refreg/ Invited review in "Microwave Foregrounds", eds. A. de Oliveira-Costa & M. Tegmark (ASP, San Francisco, 1999)