Table 5.
Measured TB at the central position of the Sun – obtained at 18.3 and 25.8 GHz with the Grueff Radio Telescope.
| Frequency | TB, qS | TB, av | TB, eSSC |
|---|---|---|---|
| (GHz) | (K) | (K) | (K) |
| 18.3 | 10 130 ± 253 | 10 159 ± 254 | 9957 ± 100 |
| 25.8 | 9755 ± 244 | 9848 ± 246 | 9270 ± 93 |
Notes. TB was obtained from (1) the modelled quiet-Sun level (TB, qS) according to the Cas A calibrator source (Mulas et al. 2022; Pellizzoni et al. 2022), (2) the averaged solar maps (TB, av), and (3) the modelled value of the eSSC model, convolved with the beam pattern of the instrument (TB, eSSC).
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