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Characterization of the systematic effects on the Planck/HFI instrument, propagation and impact on science data

Abstract : Planck is an ESA spacecraft launched in 2009, its mission goal was to map with an exquisite precision the first light of Universe, to help understanding how it has formed. This ambitious objective requires a very high level of control on the instrumental effects. During the mission, it has been found that the component responsible of the digitization of scientific data introduced an unexpectedly high bias effect, preventing full exploitation of data from the Planck/HFI instrument. The present work relates how this bias effect was understood and successfully corrected for. A very deep analysis of the spacecraft detectors, the cryogenic chain, and the digitization component has been performed, which required a specific methodology to gather data from the spacecraft before the end of the mission and its decommissioning.
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Submitted on : Monday, January 8, 2018 - 11:03:06 AM
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2016TOU30362b.pdf
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  • HAL Id : tel-01677257, version 1

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Alexandre Sauvé. Characterization of the systematic effects on the Planck/HFI instrument, propagation and impact on science data. Astrophysics [astro-ph]. Université Paul Sabatier - Toulouse III, 2016. English. ⟨NNT : 2016TOU30362⟩. ⟨tel-01677257⟩

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