The Sachs-Wolfe Effect
arXiv:astro-ph/9609105
Abstract
We present a pedagogical derivation of the Sachs-Wolfe effect, specifically the factor 1/3 relating the temperature fluctuations to gravitational potentials. The result arises from a cancellation between gravitational redshifts and intrinsic temperature fluctuations which can be derived from a coordinate transformation of the background.
2 pages, LaTeX uses laa.sty, no figures. Submitted to Astronomy & Astrophysics