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WEAK GRAVITATIONAL LENSING OF THE COSMIC MICROWAVE BACKGROUND REVISITED

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 04 Jun 2009Embargo end date: 01 Jan 2009Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 698, pages 1,771-1,777 (issn: 0004-637X, eissn: 1538-4357,

Authors: Bo Yu; Tianhong Lu; Tianhong Lu;

doi: 10.1088/0004-637x/698/2/1771 , 10.48550/arxiv.0903.4519

arXiv: http://arxiv.org/abs/0903.4519

WEAK GRAVITATIONAL LENSING OF THE COSMIC MICROWAVE BACKGROUND REVISITED

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Abstract

In this paper, we revisit the weak gravitational lensing of CMB. The key point is that the deflection angle of CMB photon varies with the redshift. From this we obtain a set of modified power spectra. Compared with the ones calculated before, the temperature, the polarization E mode and the cross power spectra correction are of the order $0.01 %$, while the polarization B mode correction is about $0.4 %$ (to $l=2000$).

Accepted for publication in the Astrophysical Journal. 18 pages, 6 figures

Related Organizations

Purple Mountain Observatory
China (People's Republic of)
Nanjing University
China (People's Republic of)
Chinese Academy of Sciences
China (People's Republic of)
Nanjing University
China (People's Republic of)

Keywords

Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics - Cosmology and Nongalactic Astrophysics

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