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First Season QUIET Observations: Measurements of CMB Polarization Power Spectra at 43 GHz in the Multipole Range 25 <= ell <= 475
QUIET Collaboration, C. Bischoff, A. Brizius +48
The Q/U Imaging ExperimenT (QUIET) employs coherent receivers at 43GHz and 95GHz, operating on the Chajnantor plateau in the Atacama Desert in Chile, to measure the anisotropy in t…
Design, development and verification of the 30 and 44 GHz front-end modules for the Planck Low Frequency Instrument
R. J. Davis, A. Wilkinson, R. D. Davies +28
We give a description of the design, construction and testing of the 30 and 44 GHz Front End Modules (FEMs) for the Low Frequency Instrument (LFI) of the Planck mission to be launc…
Design, development, and verification of the Planck Low Frequency Instrument 70 GHz Front-End and Back-End Modules
J. Varis, N. J. Hughes, M. Laaninen +26
70 GHz radiometer front-end and back-end modules for the Low Frequency Instrument of the European Space Agencys Planck Mission were built and tested. The operating principles and t…
Noise Properties of the Planck-LFI Receivers
P. Meinhold, R. Leonardi, B. Aja +47
The Planck Low Frequency Instrument (LFI) radiometers have been tested extensively during several dedicated campaigns. The present paper reports the principal noise properties of t…
Planck pre-launch status: Design and description of the Low Frequency Instrument
M. Bersanelli, N. Mandolesi, R. C. Butler +109
In this paper we present the Low Frequency Instrument (LFI), designed and developed as part of the Planck space mission, the ESA program dedicated to precision imaging of the cosmi…
Planck pre-launch status: the Planck-LFI programme
N. Mandolesi, M. Bersanelli, R. C. Butler +140
This paper provides an overview of the Low Frequency Instrument (LFI) programme within the ESA Planck mission. The LFI instrument has been developed to produce high precision maps…