Table 2
Radio-loudness of the sources in our sample.
| Source | Radio index(a) | Reference |
|
|
||
| J0324+3410 | R5 = 38 − 71 | (1) Based on HST optical flux |
| J0948+0022 | R1.4 = 194 − 793 | (2) Based on USNO and GSC catalogues (note the variable optical flux) |
| J0849+5108 | R1.4 = 1445 | (3) Based on SDSS optical flux |
| J1505+0326 | R1.4 = 1549 | (3) ... |
Notes. The moderate variability cannot cause remarkable changes in the R indices, making the published values representative enough.
With R5 = S5 GHz/SB, R1.4 = S1.4 GHz/S4400A Kellermann’s radio index. Under the assumptions of Kellermann et al.: R1.4 = 1.9R5.
Reference. (1) Zhou et al. (2007); (2) Komossa et al. (2006); (3) Yuan et al. (2008).
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