Planck 2013 results. III. LFI systematic uncertainties

Research output: Contribution to journalJournal article – Annual report year: 2013Researchpeer-review

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    IT-Department, Astrophysics, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

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    National Space Institute, Technical University of Denmark, Centrifugevej, 2800, Kgs. Lyngby, Denmark

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We present the current estimate of instrumental and systematic effect uncertainties for the Planck-Low Frequency Instrument relevant to the firstrelease of the Planck cosmological results.We give an overview of the main effects and of the tools and methods applied to assess residuals in mapsand power spectra.We also present an overall budget of known systematic effect uncertainties, which are dominated by sidelobe straylight pick-upand imperfect calibration. However, even these two effects are at least two orders of magnitude weaker than the cosmic microwave backgroundfluctuations as measured in terms of the angular temperature power spectrum. A residual signal above the noise level is present in the multipolerange ∫ < 20, most notably at 30GHz, and is probably caused by residual Galactic straylight contamination. Current analysis aims to further reducethe level of spurious signals in the data and to improve the systematic effects modelling, in particular with respect to straylight and calibrationuncertainties.
Original languageEnglish
Article numberA3
JournalAstronomy & Astrophysics
Volume571
Number of pages23
ISSN0004-6361
DOIs
Publication statusPublished - 2013
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Cosmic background radiation, Cosmology: observations, Methods: data analysis
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