Weak Gravitational Lensing of the CMB

Details Weak Gravitational Lensing of the CMB Weak Gravitational Lensing of the CMB

2006-01-26

arxiv.org/abs/astro-ph/0601594v4

Phys.Rept. 429 (2006) 1-65

Astronomy and Astrophysics

Astrophysics

Accepted by Phys. Rept.; 92 pages, PDF fully hyperlinked

Scientific paper

10.1016/j.physrep.2006.03.002

Weak gravitational lensing has several important effects on the cosmic microwave background (CMB): it changes the CMB power spectra, induces non-Gaussianities, and generates a B-mode polarization signal that is an important source of confusion for the signal from primordial gravitational waves. The lensing signal can also be used to help constrain cosmological parameters and lensing mass distributions. We review the origin and calculation of these effects. Topics include: lensing in General Relativity, the lensing potential, lensed temperature and polarization power spectra, implications for constraining inflation, non-Gaussian structure, reconstruction of the lensing potential, delensing, sky curvature corrections, simulations, cosmological parameter estimation, cluster mass reconstruction, and moving lenses/dipole lensing.

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