Pré-Publication, Document De Travail Année : 2013

Can CMB Lensing Help Cosmic Shear Surveys?

Sudeep Das
  • Fonction : Auteur
David Spergel
  • Fonction : Auteur

Résumé

Yes! Upcoming galaxy shear surveys have the potential to significantly improve our understanding of dark energy and neutrino mass if lensing systematics can be sufficiently controlled. The cross-correlations between the weak lensing shear, galaxy number counts from a galaxy redshift survey, and the CMB lensing convergence can be used to calibrate the shear multiplicative bias, one of the most challenging systematics in lensing surveys. These cross-correlations can significantly reduce the deleterious effects of the uncertainties in multiplicative bias.

Dates et versions

hal-00923420 , version 1 (02-01-2014)

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Sudeep Das, Josquin Errard, David Spergel. Can CMB Lensing Help Cosmic Shear Surveys?. 2013. ⟨hal-00923420⟩
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