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Cosmic microwave background lensing with the Planck mission

Abstract : The Planck space mission should provide sufficiently low-noise level, hight resolution data to allow the first measurement of the weak gravitational lensing effect inprinted in the CMB maps by the intervening large scale structures. After a brief review of the CMB lensing and its signatures on the primary CMB observables, I will present the statistical methods which exists in the literature for its reconstruction from the CMB maps. Then I will discuss the capability of the Planck experiment to extract the CMB lensing effect and the sensitivity of this measurement to instrument systematics and astrophysical foregrounds. Finally, I will show that the exploitation of the CMB lensing information can significantly improve the Planck mission sensitivity to cosmological parameters.
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http://hal.in2p3.fr/in2p3-00404393
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, July 16, 2009 - 12:10:24 PM
Last modification on : Thursday, November 19, 2020 - 12:58:27 PM

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  • HAL Id : in2p3-00404393, version 1

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IN2P3 | LPSC | CNRS | GEPI | UGA

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L. Perotto. Cosmic microwave background lensing with the Planck mission. 12th Marcel Grossmann Meeting (MG12), Jul 2009, Paris, France. pp.2182-2184. ⟨in2p3-00404393⟩

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