منابع مشابه
Astronomy & Astrophysics 1 / f noise and other systematic effects in the Planck - LFI radiometers
Abstract. We use an analytic approach to study the susceptibility of the P Low Frequency Instrument radiometers to various systematic effects. We examine the effects of fluctuations in amplifier gain, in amplifier noise temperature and in the reference load temperature. We also study the effect of imperfect gain modulation, non-ideal matching of radiometer parameters, imperfect isolation i...
متن کاملMaking Maps from Planck LFI 30GHz Data
This paper is one of a series describing the performance and accuracy of map-making codes as assessed by the P CTP working group. We compare the performance of multiple codes written by different groups for making polarized maps from P-sized, all-sky cosmic microwave background (CMB) data. Three of the codes are based on destriping algorithm, whereas the other three are implementation...
متن کاملPlanck 2015 results . VI . LFI mapmaking
This paper describes the mapmaking procedure applied to Planck LFI (Low Frequency Instrument) data. The mapmaking step takes as input the calibrated timelines and pointing information. The main products are sky maps of I,Q, and U Stokes components. For the first time, we present polarization maps at LFI frequencies. The mapmaking algorithm is based on a destriping technique, enhanced with a noi...
متن کاملPlanck 2013 results . V . LFI calibration
We discuss the methods employed to photometrically calibrate the data acquired by the Low Frequency Instrument on Planck. Our calibration is based on the Solar Dipole, caused by motion of the Solar System with respect to the CMB rest frame, which provides a signal of a few mK with the same spectrum as the CMB anisotrophies and is visible throughout the mission. In this data release we rely on t...
متن کاملPlanck 2015 results . V . LFI calibration
We present a description of the pipeline used to calibrate the Planck Low Frequency Instrument (LFI) timelines into thermodynamic temperatures for the Planck 2015 data release, covering four years of uninterrupted operations. As in the 2013 data release, our calibrator is provided by the spinsynchronous modulation of the cosmic microwave background dipole, but we now use the orbital component, ...
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ژورنال
عنوان ژورنال: Journal of Instrumentation
سال: 2009
ISSN: 1748-0221
DOI: 10.1088/1748-0221/4/12/t12010