1998/10/06 by Uroš Seljak, Uros Seljak, Matias Zaldarriaga +1 · 5 citations
Physics and Astronomy · #Anisotropy #Astronomy #Astrophysics #COSMIC cancer database #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Fluctuation spectrum #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gravitational lens #Optics #Physics #Planck #Redshift #Spectral density #Weak gravitational lensing #astro-ph
paper · pdf · doi:10.1103/physrevlett.82.2636
published as Phys.Rev.Lett. 82 (1999) 2636-2639 · 4 pages, 2 figures
arxiv created 1998/10/06 · openalex publication_date 1999/03/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a method to extract the projected power spectrum of density perturbations from the distortions in the cosmic microwave background (CMB). The distortions are imprinted onto the CMB by the gravitational lensing effect and can be extracted using a combination of products of CMB derivatives. Future CMB experiments such as the Planck satellite experiment will be able to extract the power spectrum with high statistical significance over 2 orders of magnitude in angle. The method proposed here directly traces dark matter in the linear regime to higher redshift (up to z\ensuremath∼1100) and larger scale (a few Gpc) than any other currently known method.