Full-sky CMB lensing reconstruction in presence of sky-cuts

被引：43

作者：

Benoit-Levy, A. ^{[1
,2
]}

Dechelette, T. ^{[2
]}

Benabed, K. ^{[2
]}

Cardoso, J. -F. ^{[2
,3
,4
,5
]}

Hanson, D. ^{[6
,7
]}

Prunet, S. ^{[2
]}

机构：

[1] UCL, Dept Phys & Astron, London WC1E 6BT, England

[2] Univ Paris 06, CNRS, Inst Astrophys Paris, UMR 7095, F-75014 Paris, France

[3] Univ Paris 06, CNRS, UMR 7164, F-75013 Paris, France

[4] CNRS, Lab Traitement & Informat, UMR 5141, F-75634 Paris 13, France

[5] Telecom ParisTech, F-75634 Paris 13, France

[6] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[7] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

ASTRONOMY & ASTROPHYSICS | 2013年 / 555卷

关键词：

gravitational lensing: weak; methods: data analysis; cosmic background radiation; POWER SPECTRUM; MICROWAVE; MAPS; PLANCK;

D O I：

10.1051/0004-6361/201321048

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the reconstruction of the CMB lensing potential and its power spectrum on the full sphere in presence of sky-cuts due to point sources and Galactic contamination. These two effects are treated separately. Small regions contaminated by point sources are filled in using constrained Gaussian realizations. The Galactic plane is simply removed using an apodized mask before lensing reconstruction. This algorithm recovers the power spectrum of the lensing potential with no significant bias.

引用

页数：10

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