Table 1.
Radio flux density values of SDSS J1105+1452.
| Epoch | Survey | Frequency | Beam size | Flux density | Peak intensity | Reference |
|---|---|---|---|---|---|---|
| (GHz) | (arcsec) | (mJy) | (mJy beam−1) | |||
| 1987.3 | GB6 | 4.85 | 216 × 204 | ≲22 | – | Gregory et al. (1996) |
| 1994.5 | NVSS | 1.4 | 45 | ≲2.5 | – | Condon et al. (1998) |
| 1999.96 | FIRST | 1.4 | 5.4 | 1.4 ± 0.1 | 1.6 ± 0.3 | Helfand et al. (2015) |
| 2017.96 | VLASS | 3 | 2.5 | 39.0 ± 0.4 | 36.9 ± 0.4 | |
| 2020.33 | RACS-low | 0.889 | 25 | 32.1 ± 2.8 | 32.3 ± 0.3 | Hale et al. (2021) |
| 2020.63 | VLASS – SE | 3 | 2.5 | 40.4 ± 0.4 | 39.4 ± 0.4 | |
| 2021.01 | RACS-mid | 1.367 | 11.2 × 9.3 | 32.4 ± 2.0 | 31.4 ± 1.9 | Duchesne et al. (2024) |
| 2021.99 | RACS-high | 1.655 | 11.9 × 8.1 | 42.7 ± 4.3 | 41.6 ± 4.2 | Duchesne et al. (2025) |
| 2023.04 | VLASS | 3 | 2.5 | 43.1 ± 0.5 | 42.6 ± 0.6 | |
| 2025.59 | Effelsberg | 4.95 | 139 | 32 ± 2 | – | this work |
| 2025.59 | Effelsberg | 6.75 | 109 | 35 ± 2 | – | this work |
Notes. In the last column, the references for the appropriate catalogues are listed. In the case of the VLASS, the flux densities and peak intensity values obtained from image fitting are given (see text). For the other surveys, we use the published catalogue values. Below the horizontal line, the most recent Effelsberg flux density measurements are listed.
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