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Table 2.
Results of the 2D cross-correlation for core shift determination.
| Date | P.C. | Freq. pair | Common Beam | Δx, Δy |  |
Uncertainty | Correlation |
|---|---|---|---|---|---|---|---|
| [GHz] | [mas × mas] | [mas, mas] | [mas] | [mas] | Coefficient | ||
| 2022-01-02 | BM516A | 4.9/8.4 | 1.66 × 1.66 | 0.68, 0.00 | 0.68 | 0.23 | 0.999 |
| 8.4/15.4 | 0.88 × 0.88 | 0.45, 0.00 | 0.45 | 0.12 | 0.979 | ||
| 15.4/23.6 | 0.60 × 0.60 | 0.24, 0.00 | 0.24 | 0.08 | 0.938 | ||
| 2022-08-06 | BM516B | 4.9/8.4 | 1.32 × 1.32 | 0.65, 0.00 | 0.65 | 0.19 | 0.989 |
| 8.4/15.4 | 0.84 × 0.84 | 0.32, 0.00 | 0.32 | 0.12 | 0.979 | ||
| 15.4/23.6 | 0.54 × 0.54 | 0.20, 0.05 | 0.21 | 0.08 | 0.961 | ||
| 23.6/43.2 | 0.30 × 0.30 | 0.39, 0.00 | 0.39 | 0.04 | 0.961 | ||
Notes. Col. 1: Observation date. Col. 2: Project code. Col. 3: Frequency pair. Col. 4: Common circular restoring beam. Col. 5: Shifts in RA and Dec. Col. 6: Shift magnitude. Col. 7: Positional uncertainty. Col. 8: Correlation coefficient.
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