The Planck-LFI Programme (original) (raw)

2009

Abstract

Context. This paper provides an overview of the Low Frequency Instrument (LFI) programme within the ESA Planck mission. Aims. The LFI instrument has been developed to produce high precision maps of the microwave sky at frequencies in the 27÷77 GHz range, below the peak of the Cosmic Microwave Background (CMB) radiation spectrum. Methods. The scientific goals are described, ranging from mainstream cosmology to Galactic and extragalactic astrophysics. The instrument design and development is outlined, together with the model philosophy and testing strategy. The instrument is presented in the context of the Planck mission. The LFI approach to on-ground and in-flight calibration is described. We also provide a description of the LFI ground segment. We present results of a number of tests that demonstrate the capability of the LFI Data Processing Centre (DPC) to properly reduce and analyse LFI flight data, from tel emetry information to sky maps and other scientific products . The organi...

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