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RESEARCH PRODUCT

Lens Effect and CMB Anisotropies: Deviations from Gaussianity

P. CerdáD. Sáez

subject

PhysicsGeodesics in general relativityNumerical analysisGaussianmedia_common.quotation_subjectCosmic microwave backgroundAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicslaw.inventionLens (optics)symbols.namesakelawSkysymbolsSuperimpositionAnisotropymedia_common

description

The CMB sky can be seen as the superimposition of two components, one of them is the temperature distribution in the absence of lensing and the other one is the correction caused by lensing. In the model under consideration, the first of these components is Gaussian, but the second is not. Numerical methods to calculate angular correlations in the lens component are designed and tested. Some of these correlations are estimated. Deviations from Gaussianity are confirmed.

yearjournalcountryeditionlanguage
2003-01-01
https://doi.org/10.1007/978-94-017-1778-6_12