Table 4.
Median and standard deviation values of key polarisation quantities.
| Quantity | 1.5 × 1.3 arcsec | 2 × 2 arcsec | |||
|---|---|---|---|---|---|
| Band 4 | Band 7 | Band 4 | Band 7 | ||
| I [MJy/sr] | median | 318.65 | 1936.09 | 361.00 | 1637.37 |
| std | 268.82 | 1028.43 | 222.36 | 670.13 | |
| PI [MJy/sr] | median | 1.92 | 8.86 | 1.46 | 4.01 |
| std | 0.51 | 2.40 | 0.39 | 1.85 | |
| PF [%] | median | 0.49 | 0.39 | 0.31 | 0.22 |
| std | 0.90 | 0.16 | 0.81 | 0.13 | |
| B field [degrees] | median | 47.93 | 46.44 | 44.74 | 35.04 |
| std | 31.49 | 27.11 | 20.05 | 20.11 | |
| S [degrees] | median | 27.15 | 32.87 | 13.43 | 26.12 |
| std | 12.55 | 11.51 | 15.38 | 15.95 | |
Notes. These measurements have been computed using our total intensity and polarisation images of NGC253 at common resolution. The measurements are made using the area defined in Sect. 3.4. Additionally, for PI, PF, 𝒮 and B field orientation only pixels with PF/σPF > 3 have been used for the median and standard deviation computation.
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