Table 1.
X-ray, optical and radio observations of GRB 220627A used in this work.
| Δt | Telescope | Band | Wavelength | Frequency | Flux | Uncertainty |
|---|---|---|---|---|---|---|
| (days) | (nm) | (Hz) | (μJy) | (μJy) | ||
| 0.52 | Swift/XRT | 1 keV | – | 2.42e+17 | 0.092 | 0.018 |
| 1.59 | Swift/XRT | 1 keV | – | 2.42e+17 | 0.019 | 0.006 |
| 4.62 | Swift/XRT | 1 keV | – | 2.42e+17 | < 0.010 | – |
| 0.84 | MeerLICHT | q | 580 | 5.169e+14 | 11.91 | 0.66 |
| 0.87 | MeerLICHT | q | 580 | 5.169e+14 | 11.07 | 0.71 |
| 1.83 | MeerLICHT | q | 580 | 5.169e+14 | 2.81 | 0.52 |
| 1.84 | MeerLICHT | g | 480 | 6.246e+14 | 3.08 | 0.65 |
| 1.84 | MeerLICHT | r | 626 | 4.789e+14 | 5.45 | 1.00 |
| 1.85 | MeerLICHT | i | 765 | 3.919e+14 | < 4.66 | – |
| 0.90 | Lesedi | g | 466 | 6.439e+14 | 10.97 | 1.41 |
| 0.91 | Lesedi | r | 611 | 4.907e+14 | 13.93 | 1.28 |
| 0.91 | Lesedi | i | 758 | 3.954e+14 | 16.60 | 2.14 |
| 0.92 | Lesedi | g | 466 | 6.439e+14 | 7.52 | 0.69 |
| 0.93 | Lesedi | r | 611 | 4.907e+14 | 15.42 | 0.99 |
| 0.94 | Lesedi | i | 758 | 3.954e+14 | 17.38 | 1.76 |
| 1.13 | VLT | R | 642 | 4.666e+14 | 11.59 | 0.21 |
| 5.09 | VLT | R | 642 | 4.666e+14 | 0.53 | 0.05 |
| 360.2 | VLT | R | 642 | 4.666e+14 | < 0.156 | – |
| 2.18 | GROND | g′ | 459 | 6.536e+14 | 1.72 | 0.17 |
| 2.18 | GROND | r′ | 622 | 4.820e+14 | 3.02 | 0.17 |
| 2.18 | GROND | i′ | 764 | 3.924e+14 | 3.63 | 0.40 |
| 2.18 | GROND | z′ | 899 | 3.335e+14 | 4.66 | 0.90 |
| 2.18 | GROND | J | 1240 | 2.418e+14 | < 10.00 | - |
| 2.18 | GROND | H | 1647 | 1.820e+14 | < 20.89 | - |
| 2.18 | GROND | K | 2170 | 1.381e+14 | < 47.87 | – |
| 3.21 | GROND | g′ | 459 | 6.536e+14 | 1.07 | 0.28 |
| 3.21 | GROND | r′ | 622 | 4.820e+14 | 0.85 | 0.23 |
| 3.21 | GROND | i′ | 764 | 3.924e+14 | < 1.58 | – |
| 3.21 | GROND | J | 1240 | 2.418e+14 | < 12.02 | – |
| 3.21 | GROND | H | 1647 | 1.820e+14 | < 22.91 | – |
| 3.21 | GROND | K | 2170 | 1.381e+14 | < 47.86 | – |
| 7.3 | ATCA | Ku | – | 1.7e+10 | 400 | 132 |
| 8.9 | MeerKAT | L | – | 1.4e+09 | < 27 | – |
| 35.7 | MeerKAT | L | – | 1.4e+09 | < 42 | – |
Notes. The optical data have not been corrected for Galactic or host galaxy extinction. Radio measurements were obtained from GCN circulars (Leung et al. 2022; Giarratana et al. 2022). We provide the central wavelength of the optical/NIR observing bands, and list all upper limits at the 3σ level.
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