How sensitive is the cmb to a single lens?

B. Rathaus, A. Fialkov, N. Itzhaki

Research output: Contribution to conferencePaperpeer-review

Abstract

We study the imprints of a single lens, that breaks statistical isotropy, on the CMB and calculate the signal to noise ratio (S/N) for its detection. We emphasize the role of non-Gaussianities induced by CDM weak lensing in this calculation and show that typically the S/N is much smaller than expected. In particular we find that the hypothesis that a void is responsible for the WMAP cold spot can barely be tested via weak lensing of the CMB.

Original languageEnglish
Pages241-244
Number of pages4
StatePublished - 2012
Event47th Rencontres de Moriond on Cosmology 2012 - La Thuile, Italy
Duration: 10 Mar 201217 Mar 2012

Conference

Conference47th Rencontres de Moriond on Cosmology 2012
Country/TerritoryItaly
CityLa Thuile
Period10/03/1217/03/12

Funding

FundersFunder number
European Commission203247
Israel Science Foundation1362/08

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