Summary of LFI data characteristics
|Parameter||30 GHz||44 GHz||70 GHz|
|Centre frequency [GHz]||28.4||44.1||70.4|
|Scanning beam FWHMa [arcmin]||33.10||27.94||13.08|
|Scanning beam ellipticitya||1.37||1.25||1.27|
|Effective beam FWHMb [arcmin]||32.29||27.00||13.21|
|White noise level in mapc [μKCMB]||*TBD||*TBD||*TBD|
|White noise level in timelinesd [μKCMB s1/2]||148.1||174.2||152.0|
|Overall calibration uncertaintye [%]||0.35||0.26||0.29|
|Systematic effects uncertainty in Stokes I f [μKCMB]||0.88||1.97||1.87|
|Systematic effects uncertainty in Stokes Q f [μKCMB]||1.11||1.14||2.25|
|Systematic effects uncertainty in Stokes U f [μKCMB]||0.95||1.29||2.22|
a Determined by fitting Jupiter observations directly in the timelines.
c White noise per pixel computed from half-ring difference maps. These values are within 1% of the white noise sensitivity computed directly on the timelines, taking into account the actual integration time represented in the maps.
d Values derived from fitting noise spectra.
e Sum of the error on the estimation of the calibration constant (0.25 %) and the square root of the squared sum of the following errors: beam uncertainty; sidelobe convolution effect; and unknown systematics as measured from the power spectrum at 50 < ℓ < 250, see Planck-2015-A04.
- Planck 2015 results. II. LFI processing, Planck Collaboration, 2016, A&A, 594, A2.
- Planck 2015 results. XXVI. The second Planck catalogue of compact sources, Planck Collaboration, 2016, A&A, 594, A26.
- Planck 2015 results. IV. LFI beams and window functions, Planck Collaboration, 2016, A&A, 594, A4.
(Planck) Low Frequency Instrument
Cosmic Microwave background
To be defined / determined