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Project Acronym LFI-sim
Scientific Discipline Cosmology – Space Missions
Principal Investigator(s) Fabio Pasian (INAF- O.A.T.), Hannu Kurki-Suonio (Univ. of Helsinki)
Leading Institution INAF -O.A Trieste and Univ. of Helsinki
Partner Institution(s)
  • INAF-IASF Bologna,
  • Consejo Superior de Investigaciones Cientificas (Instituto de Fisica de Cantabria),
  • Max-Planck Institut für Astrophysik Garching,
  • SISSA Trieste,
  • University of Milano,
  • University “Tor Vergata” Rome

Project summary and results

Planck is the 3rd generation space mission for the mapping and the analysis of the microwave sky: its unprecedented combination of sky and frequency coverage, accuracy, stability and sensitivity is designed to achieve the most efficient detection of the Cosmic Microwave Back-ground (CMB) in both temperature and polarisation. In order to achieve the ambitious goals of the mission, unanimously acknowledged by the scientific community to be of the highest importance, data processing of extreme accuracy is needed.

The LFI-sim proposal aimed at using the supercomputing framework provided by DEISA to simulate several times the whole mission of Planck's LFI instrument, on the basis of different scientific and instrumental hypotheses, and to reduce, calibrate and analyse the simulated data down to the production of the final products of the mission, in order to evaluate the impact of possible LFI instrumental effects on the quality of the scientific results, and consequently to refine appropriately the data processing algorithms.

The LFI-sim project within DECI concentrated on understanding the effect of optical systematic effects, i.e. the effects derived from the optical behaviour of Planck receivers. In particular, one of the critical aspects previously impossible to evaluate was tackled, i.e. a complete study of the effect of observing the sky with realistic beams on the scientific results of the mission. This was successfully achieved.


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