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Table 1.
Details of our quasar sample and the GMRT observations.
| Source name | Optical coordinates | Redshift | Ref. | Band | Phase cal. | Flux cal. | Exp. time | Beam size | RMS |
|---|---|---|---|---|---|---|---|---|---|
| (J2000) | (min) | (arcsec2) | (mJy beam−1) | ||||||
| J0002+2550 | 00:02:39.39 +25:50:34.96 | 5.80 ± 0.02 | 1 | 3 | 0040+331 | 3C48 | 101 | 6.5 × 7.6 | 0.04 |
| 4 | 0040+331 | 3C286 | 96 | 3.1 × 7.4 | 0.02 | ||||
| J0309+2717 | 03:09:47.49 +27:17:57.31 | 6.10 ± 0.03 | 2 | 3 | 0318+164 | 3C48 | 101 | 5.4 × 8.0 | 0.06 |
| 4 | 0318+164 | 3C48 | 81 | 3.2 × 4.1 | 0.02 | ||||
| J0803+3138 | 08:03:05.42 +31:38:34.20 | 6.384 ± 0.004 | 3 | 3 | 0744+378 | 3C48 | 121 | 5.5 × 13.8 | 0.04 |
| 4 | 0744+378 | 3C48 | 81 | 3.0 × 7.7 | 0.02 | ||||
| 5 | 0735+331 | 3C147 | 101 | 1.8 × 3.0 | 0.02 | ||||
| J0912+6658 | 09:12:07.67 +66:58:46.45 | 5.62 ± 0.02 | 4 | 3 | 0834+555 | 3C48 | 121 | 7.2 × 17.4 | 0.08 |
| 4 | 0834+555 | 3C48 | 112 | 3.1 × 12.3 | 0.02 | ||||
| 5 | 0834+555 | 3C147 | 101 | 1.7 × 4.5 | 0.02 | ||||
| J1037+4033 | 10:37:58.17 +40:33:29.08 | 6.07 ± 0.03 | 4 | 3 | 1006+349 | 3C48 | 101 | 5.1 × 14.1 | 0.08 |
| 4 | 1006+349 | 3C48 | 81 | 2.8 × 9.1 | 0.03 | ||||
| J1133+4814 | 11:33:50.41 +48:14:31.35 | 6.25 ± 0.02 | 4 | 3 | 1145+497 | 3C48 | 70 | 5.1 × 14.9 | 0.05 |
| 4 | 1145+497 | 3C48 | 81 | 2.9 × 8.8 | 0.02 | ||||
| J1545+6028 | 15:45:52.09 +60:28:23.95 | 5.78 ± 0.03 | 5 | 3 | 1449+632 | 3C48 | 121 | 4.5 × 9.3 | 0.05 |
| 4 | 1449+632 | 3C286 | 118 | 3.3 × 5.2 | 0.02 | ||||
| J2201+2338 | 22:01:07.62 +23:38:37.87 | 5.83 ± 0.02 | 4 | 3 | 2251+188 | 3C48 | 141 | 5.3 × 12.2 | 0.04 |
| 4 | 2251+188 | 3C286 | 100 | 3.2 × 7.0 | 0.02 | ||||
| 5 | 2251+188 | 3C48 | 45 | 1.8 × 3.6 | 0.02 | ||||
| J2336+1842 | 23:36:24.72 +18:42:47.98 | 6.6 ± 0.04 | 4 | 3 | 2251+188 | 3C48 | 141 | 5.4 × 12.0 | 0.04 |
| 4 | 2251+188 | 3C286 | 101 | 3.2 × 8.8 | 0.03 | ||||
| 5 | 2251+188 | 3C48 | 45 | 1.8 × 2.9 | 0.03 |
Notes. The RMS noise level is given for the full band integration.
References. [1] Fan et al. (2004); [2] Belladitta et al. (2020); [3] Wang et al. (2019); [4] Gloudemans et al. (2022); [5] Wang et al. (2016).
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