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Table 3.
Elements of the noise covariance matrix.
| Ring | σII | σIQ | σIU | σQQ | σUU | σQU |
|---|---|---|---|---|---|---|
| Band 4 [(MJy/sr)2] | ||||||
| 0 (inner 1/3) | 6.70 | −0.06 | −0.03 | 0.04 | 0.04 | 6.9E−03 |
| 1 | 7.55 | 0.09 | −0.13 | 0.03 | 0.03 | −3.0E−03 |
| 2 | 6.66 | 0.03 | −0.04 | 0.04 | 0.04 | 2.1E−03 |
| 3 | 4.80 | 4.14E−03 | 0.02 | 0.08 | 0.08 | 2.5E−03 |
| 4 | 10.31 | 0.03 | −0.08 | 0.21 | 0.20 | 9.6E−03 |
| Band 7 [(MJy/sr)2] | ||||||
| 0 (inner 1/3) | 3.96E+04 | −257.28 | −14.19 | 98.58 | 106.45 | 15.46 |
| 1 | 3.24E+04 | 56.80 | −28.09 | 105.77 | 130.86 | −1.82 |
| 2 | 2.79E+04 | 121.77 | 50.77 | 168.56 | 202.37 | 7.78 |
| 3 | 3.42E+04 | −9.98 | −24.79 | 351.89 | 408.84 | 0.13 |
| 4 | 7.13E+04 | 4.54 | −156.03 | 833.56 | 939.74 | 4.57 |
Notes. These values were computed at native resolution as measured in the ALMA maps of NGC253. Each row corresponds to a different ring shown on Fig. 1.
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