Planckpre-launch status: Low Frequency Instrument calibration and expected scientific performance
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چکیده
منابع مشابه
Planck pre-launch status: High Frequency Instrument polarization calibration
The High Frequency Instrument of Planck will map the entire sky in the millimeter and sub-millimeter domain from 100 to 857 GHz with unprecedented sensitivity to polarization (ΔP/Tcmb ∼ 4 × 10−6 for P either Q or U and Tcmb 2.7 K) at 100, 143, 217 and 353 GHz. It will lead to major improvements in our understanding of the cosmic microwave background anisotropies and polarized foreground signals...
متن کاملPlanck pre-launch status: Calibration of the Low Frequency Instrument flight model radiometers
The Low Frequency Instrument (LFI) on-board the ESA Planck satellite carries eleven radiometer subsystems, called radiometer chain assemblies (RCAs), each composed of a pair of pseudo-correlation receivers. We describe the on-ground calibration campaign performed to qualify the flight model RCAs and to measure their pre-launch performances. Each RCA was calibrated in a dedicated flight-like cry...
متن کاملAquarius Radiometer: Pre-launch Performance and Calibration
The NASA-CONAE Aquarius/SAC-D observatory for measuring the changing global distribution of sea surface salinity at unprecedented accuracy from space is scheduled to launch in 2010 [1]. The Aquarius Instrument comprises a 1.4 GHz radiometer and a 1.2 GHz scatterometer, both of which share a common reflector antenna, feed network, and other electronics. The ability to measure sea surface salinit...
متن کاملPlanck pre-launch status: Expected LFI polarisation capability
We present a system-level description of the Low Frequency Instrument (LFI) considered as a differencing polarimeter, and evaluate its expected performance. The LFI is one of the two instruments on board the ESA Planck mission to study the cosmic microwave background. It consists of a set of 22 radiometers sensitive to linear polarisation, arranged in orthogonally-oriented pairs connected to 11...
متن کاملPlanck pre-launch status: The HFI instrument, from specification to actual performance
Context. The High Frequency Instrument (HFI) is one of the two focal instruments of the Planck mission. It will observe the whole sky in six bands in the 100 GHz−1 THz range. Aims. The HFI instrument is designed to measure the cosmic microwave background (CMB) with a sensitivity limited only by fundamental sources: the photon noise of the CMB itself and the residuals left after the removal of f...
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics
سال: 2010
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/200912849