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Table 2.
Best-fit flux densities obtained from a Gaussian fit to the radio images of VIK J2318–31 together with the synthesised beam size, position angle (PA), and RMS of each observation.
| Epoch | Telescope | Frequency | Int. flux | Peak surf. | Beam size | PA east | Off-source |
|---|---|---|---|---|---|---|---|
| density | brightness | of north | RMS | ||||
| (GHz) | (μ Jy) | (μ Jy beam−1) | (maj″ × min″) | (deg) | (μ Jy beam−1) | ||
| March–August | |||||||
| 2018 | MWA | 0.216 | < 860 | < 860 | 63.8×53.7 | −37.0 | 280 |
| April | uGMRT | 0.400 | 990 ± 206 | 985 ± 123 | 9.4 × 5.7 | −1.7 | 113 |
| 2022 | uGMRT | 0.650 | 787 ± 60 | 782 ± 46 | 7.1 × 3.8 | 30.0 | 26 |
| ATCA | 2.1 | 565 ± 57 | 504 ± 35 | 13.8 × 5.6 | −17.1 | 24 | |
| ATCA | 5.5 | 155 ± 23 | 149 ± 14 | 8.1 × 3.6 | −0.4 | 12 | |
| ATCA | 9 | – | 54 ± 10 | 4.2 × 2.3 | 0.0 | 9 | |
| September | uGMRT | 0.400 | 1070 ± 260 | 791 ± 132 | 8.4 × 5.0 | −26.4 | 123 |
| 2022 | uGMRT | 0.650 | 798 ± 59 | 786 ± 48 | 8.5 × 3.1 | 11.0 | 28 |
| ATCA | 2.1 | 409 ± 41 | 398 ± 28 | 10.6 × 4.1 | 2.3 | 20 | |
| ATCA | 5.5 | 138 ± 34 | 143 ± 20 | 4.8 × 1.9 | 4.4 | 19 | |
| ATCA | 9 | < 79 | < 79 | 3.0 × 1.1 | 4.0 | 25 | |
Notes. The upper limits reported in this table are at 3σ.
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