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

Benoit-Lévy, A. ; Déchelette, T. ; Benabed, K. ; Cardoso, J.-F. ; Hanson, D. ; Prunet, S.

Astronomy and astrophysics (Berlin), 2013-07, Vol.555, p.A37 [Periódico revisado por pares]

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Título:
Full-sky CMB lensing reconstruction in presence of sky-cuts
Autor: Benoit-Lévy, A. ; Déchelette, T. ; Benabed, K. ; Cardoso, J.-F. ; Hanson, D. ; Prunet, S.
Assuntos: Astrophysics ; cosmic background radiation ; gravitational lensing: weak ; methods: data analysis ; Physics
É parte de: Astronomy and astrophysics (Berlin), 2013-07, Vol.555, p.A37
Notas: e-mail: benoitl@star.ucl.ac.uk
publisher-ID:aa21048-13
istex:E432E6C35DE9B1C8AA9A9252EFB1FABF0096B46B
dkey:10.1051/0004-6361/201321048
bibcode:2013A%26A...555A..37B
ark:/67375/80W-6CTTB32Z-C
Descrição: 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.
Editor: EDP Sciences
Idioma: Inglês

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