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Article overview
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Lensing effect on polarization in microwave background: extracting convergence power spectrum | Jacek Guzik
; Uros Seljak
; Matias Zaldarriaga
; | Date: |
23 Dec 1999 | Journal: | Phys.Rev. D62 (2000) 043517 | Subject: | astro-ph | Affiliation: | Jagiellonian University), Uros Seljak (Princeton University), Matias Zaldarriaga (IAS | Abstract: | Matter inhomogeneities along the line of sight deflect the cosmic microwave background (CMB) photons originating at the last scattering surface at redshift $z sim 1100$. These distortions modify the pattern of CMB polarization. We identify specific combinations of Stokes $Q$ and $U$ parameters that correspond to spin 0,$pm 2$ variables and can be used to reconstruct the projected matter density. We compute the expected signal to noise as a function of detector sensitivity and angular resolution. With Planck satellite the detection would be at a few $sigma$ level. Several times better detector sensitivity would be needed to measure the projected dark matter power spectrum over a wider range of scales, which could provide an independent confirmation of the projected matter power spectrum as measured from other methods. | Source: | arXiv, astro-ph/9912505 | Services: | Forum | Review | PDF | Favorites |
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