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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