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Table 1.
Basic properties of the archival data used in the analysis.
| Frequency | Bandwidth | Project | Obs. date | Array | Time on | Beam shape | σrms | ||
|---|---|---|---|---|---|---|---|---|---|
| [GHz] | [MHz] | code | config. | source [h] | bmaj[″] | bmin[″] | sbpa[°] | [mJy/b.a.] | |
| Outer double maps | |||||||||
| 0.144 (1) | 48 | – | – | – | – | 6 | 6 | 5 | |
| 0.33 | 2.2 | AK461 | 1998.10.04 | B | 1.17 | 18.4 | 17.5 | 34.7 | 12 |
| 1.4 (a) | 100 | AB881 | 1999.01.03 | C | 2.5 | 14.3 | 13.8 | −70.8 | 0.13 |
| 1.46 | 50 | TEST | 1983.02.10 | C | 0.83 | 14.3 | 12.5 | 28.5 | 1.8 |
| 1.52 (a),(2) | 25 | – | – | – | – | 1.4 | 1.4 | 0.04 | |
| 4.89 | 50 | AB881 | 1999.05.18 | D | 3.08 | 13.5 | 12.3 | 13.9 | 0.15 |
| 8.46 | 100 | AB780 | 1996.08.18 | D | 1 | 8.4 | 7.2 | −85.5 | 0.7 |
| 14.94 | 100 | AB780 | 1996.08.18 | D | 2.75 | 6.9 | 5.1 | −74.6 | 0.3 |
| Inner double maps | |||||||||
| 1.52 | 30 | AC149 | 1986.05.18 | A | 6.57 | 1.48 | 1.37 | −15.6 | 0.25 |
| 4.85 | 75 | AC149 | 1986.09.06 | B | 5.16 | 1.7 | 1.35 | −84.8 | 0.1 |
| 8.46 | 100 | AB780 | 1996.03.12 | C | 5.68 | 2.34 | 2.27 | −70.8 | 0.17 |
| 14.94 | 100 | AB780 | 1996.03.08 | C | 8.63 | 1.77 | 1.48 | 85.5 | 0.07 |
Notes.
(a)
Not presented in Fig. 1.
(1)
The LOFAR Two-metre Sky Survey – DR2, field P141+47: Shimwell et al. (2022).
(2)
VLA L band, A+B configuration: Clarke et al. (1992).
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