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Planck 2013 results. III. LFI systematic uncertainties

Abstract: We present the current estimate of instrumental and systematic effect uncertainties for the Planck-Low Frequency Instrument relevant to the first release of the Planck cosmological results. We give an overview of the main effects and of the tools and methods applied to assess residuals in maps and power spectra. We also present an overall budget of known systematic effect uncertainties, which are dominated by sidelobe straylight pick-up and imperfect calibration. However, even these two effects are at least two orders of magnitude weaker than the cosmic microwave background fluctuations as measured in terms of the angular temperature power spectrum. A residual signal above the noise level is present in the multipole range â.," < 20, most notably at 30 GHz, and is probably caused by residual Galactic straylight contamination. Current analysis aims to further reduce the level of spurious signals in the data and to improve the systematic effects modelling, in particular with respect to straylight and calibration uncertainties. © 2014 ESO.

 Fuente: Astronomy & Astrophysics, 2014, 571, A3

 Editorial: EDP Sciences

 Fecha de publicación: 01/11/2014

 Nº de páginas: 23

 Tipo de publicación: Artículo de Revista

 DOI: 10.1051/0004-6361/201321574

 ISSN: 0004-6361,1432-0746

 Url de la publicación: http://www.aanda.org/articles/aa/abs/2014/11/aa21574-13/aa21574-13.html

Autoría

LAURA BONAVERA

ANDRES CURTO MARTIN

JOAQUIN GONZALEZ-NUEVO GONZALEZ

MARCOS LOPEZ-CANIEGO ALCARRIA

LUIGI TOFFOLATTI