Open Access
Table 1.
Main properties of ORCs and ORC candidates.
| ORC ID | Source | Diam. | l | b | F1 GHz | α | Host | Instrument | Refs |
|---|---|---|---|---|---|---|---|---|---|
| (arcsec) | (deg) | (deg) | (mJy) | galaxy? | |||||
| ORC 1 | ORC J2103–6200 | 80 | 333.41592 | −39.00906 | 3.9 | −1.2 ± 0.1 | ✓ | ASKAP | 1 |
| ORC 2 | ORC J2058–5736a | 80 | 339.08813 | −39.52277 | 7.0 | −0.8 ± 0.1 | – | ASKAP | 1 |
| ORC 3 | ORC J2058–5736b | 80 | 339.08147 | −39.55247 | 1.9 | −0.5 ± 0.2 | – | ASKAP | 1 |
| ORC 4 | ORC J1656+2726 | 90 | 044.35860 | +49.36566 | 9.4 | −0.9 ± 0.2 | ✓ | GMRT | 1 |
| ORC 5 | ORC J0102–2450 | 70 | 344.00735 | +24.60441 | 3.2 | −0.8 ± 0.2 | ✓ | ASKAP | 2 |
| ORC J0624–6948 | 196 | 280.16797 | −27.66217 | 11.2 (a) | −0.4 ± 0.1 | – | ASKAP | 3 | |
| ORC J1027–4422 | 90 | 277.53776 | +11.26383 | ∼1.0 | > − 1.9 | – | MeerKAT | 4 | |
| J1802–3353 | 80 | 357.55482 | −5.64533 | 0.5 | −0.1 ± 0.3 | ? | MeerKAT | 5 | |
Notes.
(a)
Scaled from the 888 MHz flux density reported in Filipović et al. (2022).
References: (1) Norris et al. (2021); (2) Koribalski et al. (2021); (3) Filipović et al. (2022); (4) Koribalski et al. (2024); (5) this work.
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