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Table 2
Noise parameters for LFI radiometers.
| Knee frequency fknee [mHz] | Slope β | White noise σ [mK] | Weight  (norm.) |
Horn-uniform | |||||
| Radiometer | M | S | M | S | M | S | M | S | M and S |
|
|
|||||||||
| 70 GHz | |||||||||
| LFI-18 .. | 14.82 | 17.78 | -1.060 | -1.180 | 4.553 | 4.146 | 0.0878 | 0.1059 | 0.0973 |
| LFI-19 .. | 11.72 | 13.71 | -1.207 | -1.111 | 5.144 | 4.926 | 0.0688 | 0.0750 | 0.0727 |
| LFI-20 .. | 7.96 | 5.67 | -1.198 | -1.298 | 5.212 | 5.507 | 0.0670 | 0.0600 | 0.0642 |
| LFI-21 .. | 37.89 | 13.27 | -1.247 | -1.205 | 4.003 | 4.971 | 0.1136 | 0.0737 | 0.0905 |
| LFI-22 .. | 9.68 | 14.80 | -1.424 | -1.237 | 4.356 | 4.715 | 0.0960 | 0.0819 | 0.0895 |
| LFI-23 .. | 29.65 | 59.03 | -1.073 | -1.211 | 4.476 | 4.790 | 0.0909 | 0.0794 | 0.0858 |
| 44 GHz | |||||||||
| LFI-24 .. | 26.78 | 88.30 | -0.942 | -0.908 | 3.159 | 2.734 | 0.1415 | 0.1890 | 0.1640 |
| LFI-25 .. | 20.07 | 46.37 | -0.845 | -0.904 | 2.834 | 2.698 | 0.1759 | 0.1940 | 0.1869 |
| LFI-26 .. | 64.42 | 68.19 | -0.918 | -0.758 | 3.295 | 2.887 | 0.1301 | 0.1695 | 0.1491 |
| 30 GHz | |||||||||
| LFI-27 .. | 174.53 | 108.79 | -0.927 | -0.907 | 1.605 | 1.729 | 0.2768 | 0.2385 | 0.2583 |
| LFI-28 .. | 130.08 | 43.08 | -0.931 | -0.900 | 1.812 | 1.633 | 0.2172 | 0.2674 | 0.2417 |
Notes. Values for fknee, β, and σ given here were used for the construction of the noise prior. We give also radiometer weights for pure noise weighting and for the horn-uniform weighting scheme. Horn-uniform weighting was used for actual mapmaking.
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