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 language | English |
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| Pages | 241-244 |
| Number of pages | 4 |
| State | Published - 2012 |
| Event | 47th Rencontres de Moriond on Cosmology 2012 - La Thuile, Italy Duration: 10 Mar 2012 → 17 Mar 2012 |
Conference
| Conference | 47th Rencontres de Moriond on Cosmology 2012 |
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| Country/Territory | Italy |
| City | La Thuile |
| Period | 10/03/12 → 17/03/12 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics