1993/10/26 by Wayne Hu, Naoshi Sugiyama · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.1103/physrevd.50.627
published as Phys.Rev.D50:627-631,1994 · 6 pages, compressed uuencoded postscript, CfPA-TH-93-36
arxiv created 1993/10/26 · openalex publication_date 1994/07/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The integrated Sachs-Wolfe (ISW) effect can be an important factor in the generation of cosmic microwave background anisotropies on all scales, especially in a reionized curvature- or \ensuremathΛ-dominated universe. We present a simple analytic treatment of the ISW effect, which is analogous to thick last scattering surface techniques for the Doppler effect, that compares quite well with the full numerical calculations. The power spectrum of temperature fluctuations due to the small scale ISW effect has a wave number dependence k^\mathrm\ensuremath-5 times that of the matter power spectrum.