Table 1
Flux densities of S255IR NIRS 3 observed at different epochs and frequencies.
| Year: | 2016(a) | |||||
| Date: | Mar. 11 | Jul. 10 | Aug. 1 | Oct. 15 | Nov. 20 | Dec. 27 |
| Days: | −121 | 0 | 22 | 97 | 133 | 170 |
| Array: | C | B | B | A | A | A |
| v (GHz) | Sv (mJy) | |||||
| 1.5 | – | – | – | 3.58 | 3.3 | 4.7 |
| 3.0 | – | – | – | – | – | – |
| 6.0 | 0.87 | 0.79 | 1.1 | 2.63 | 4.8 | 7.9 |
| 10.0 | 1.0 | 1.2 | 1.8 | 3.49 | 6.7 | 11.0 |
| 22.2 | 2.7 | 2.2 | 3.1 | 6.58 | 11.3 | 17.6 |
| 45.5 | 4.4 | 1.9 | 3.8 | 13.6 | 21.3 | 26.8 |
| Year: | 2017 | |||||||||
| Date: | Jan. 26 | Mar. 3 | Mar. 19 | Jul. 29 | Aug. 19 | Aug. 25 | Sep. 17 | Oct. 23 | Dec. 8 | Dec. 27 |
| Days: | 200 | 236 | 252 | 384 | 405 | 411 | 434 | 470 | 516 | 535 |
| Array: | A | D | D | C | C | C | B | B | B | B |
| v (GHz) | Sv (mJy)(b) | |||||||||
| 1.5 | 3.9 | <8.5 | <14.9 | <14.2 | <17.4 | <10.8 | <7.5 | <9.3 | <8.7 | <7.3 |
| 3.0 | 6.1 | <9.9 | <13.8 | <11.2 | <14.1 | <13.4 | 14.6 | 14.7 | 14.5 | 13.4 |
| 6.0 | 8.1 | 9.2(c) | 10.0(c) | 14.3 | 16.3 | 16.1 | 17.7 | 18.5 | 16.9 | 17.4 |
| 10.0 | 11.4 | 12.8(d) | 12.8(d) | 20.9 | 22.3 | 22.6 | 24.0 | 23.1 | 22.7 | 22.7 |
| 22.2 | 20.4 | 20.7 | 22.8 | 30.0 | 34.0 | 36.8 | 29.5 | 29.5 | 27.6 | 26.9 |
| 45.5 | 26.8 | 28.9 | 34.5 | 35.9 | 44.1 | 45.3 | 26.0 | 28.3 | 24.2 | 23.3 |
| Year: | 2018 | 2019 | 2021 | ||
| Date: | Jan. 15 | Mar. 29 | May. 5 | Jun. 6 | Sep. 3 |
| Days: | 554 | 627 | 664 | 1061 | 1881 |
| Array: | B | A | A | C43-9/10 | C43-9/10 |
| v (GHz) | Sv (mJy) | Sv (mJy) | Sv (mJy) | ||
| 1.5 | <6.9(b) | – | – | – | – |
| 3.0 | 13.3 | – | – | – | – |
| 6.0 | 16.8 | 15.1(e) | – | – | – |
| 10.0 | 22.2 | – | – | – | – |
| 22.2 | 25.0 | – | 24.7(e) | – | – |
| 45.5 | 23.3 | – | – | – | – |
| 92.2 | – | – | – | 46.0 (22.8)(f) | 42.3 (18.8)(f) |
Notes. The row labelled with ‘days’ gives the number of days after the beginning of the radio burst. The error on the flux densities is estimated to be ~10% (see main text). (a)Data acquired in 2016 at v ≥ 6 GHz have already been reported by Cesaroni et al. (2018) and are listed here for the sake of completeness. (b)The symbol ‘<’ indicates that the value also includes the contribution from the two large-scale lobes, due to insufficient angular resolution. (c)Corrected by subtracting a fiducial value of 1.8 mJy for the two large-scale lobes (see main text). (d)Corrected by subtracting a fiducial value of 1.0 mJy for the two large-scale lobes (see main text). (e)From Obonyo et al. (2021). (f)The value in parentheses is the flux density of the NE lobe only (see Sect. 4.1).
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