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Table A.2.
Level of leakage in Planck-LFI maps computed on three bright unpolarised regions.
| Freq. | Q/I (%) | U/I (%) | |||||
|---|---|---|---|---|---|---|---|
| (GHz) | PR3 | PR3c | PR4 | PR3 | PR3c | PR4 | |
| Cas A | |||||||
| 28.4 | 1.38 ± 0.07 | −0.34 ± 0.05 | −0.03 ± 0.04 | −2.39 ± 0.07 | −0.13 ± 0.04 | −0.80 ± 0.04 | |
| 44.1 | −0.02 ± 0.17 | −0.26 ± 0.17 | −0.06 ± 0.14 | 0.02 ± 0.15 | −0.06 ± 0.15 | −0.16 ± 0.13 | |
| 70.4 | −0.53 ± 0.43 | −0.13 ± 0.43 | −0.80 ± 0.38 | 0.84 ± 0.46 | −0.64 ± 0.46 | −0.39 ± 0.42 | |
| M42 | |||||||
| 28.4 | 1.93 ± 0.03 | −0.22 ± 0.03 | −0.34 ± 0.02 | 1.01 ± 0.02 | −0.08 ± 0.02 | −0.16 ± 0.02 | |
| 44.1 | −0.06 ± 0.09 | 0.15 ± 0.09 | 0.06 ± 0.08 | 0.29 ± 0.08 | 0.01 ± 0.08 | −0.07 ± 0.07 | |
| 70.4 | −0.83 ± 0.14 | 0.38 ± 0.14 | 0.36 ± 0.12 | −0.12 ± 0.13 | 0.69 ± 0.14 | 0.78 ± 0.10 | |
| Cygnus X | |||||||
| 28.4 | −2.18 ± 0.04 | 0.05 ± 0.03 | 0.19 ± 0.04 | −0.94 ± 0.06 | 0.22 ± 0.03 | 0.20 ± 0.03 | |
| 44.1 | −0.04 ± 0.05 | −0.17 ± 0.05 | −0.07 ± 0.04 | 0.25 ± 0.05 | 0.52 ± 0.05 | 0.46 ± 0.05 | |
| 70.4 | 0.73 ± 0.06 | −0.62 ± 0.06 | −0.02 ± 0.06 | 0.05 ± 0.06 | −0.04 ± 0.06 | −0.47 ± 0.06 | |
Notes. We quote polarisation fractions Q/I and U/I for each of the three Planck-LFI frequencies. We show results obtained on the PR3 maps, on the PR3 leakage-corrected maps and in the PR4 maps.
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