Table 2.
VLA observations and measurements.
| Source | Band | Obs date | ton | Complex gain calibrator | Flux density scale calibrator | Beam size | Sint | Speak |
|---|---|---|---|---|---|---|---|---|
| (s) | (arc sec2) | (mJy) | (mJy beam−1) | |||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
| J0131−0321 | S | 2019 August 14 | 116 | J0125−0005 | 3C138 | 0.74 × 0.52 | 60.57 ± 0.11 | 59.64 ± 0.06 |
| C | 2019 August 08 | 116 | J0125−0005 | 3C138 | 0.51 × 0.29 | 43.34 ± 0.11 | 43.15 ± 0.06 | |
| X | 2019 August 07 | 118 | J0125−0005 | 3C138 | 0.24 × 0.17 | 31.81 ± 0.18 | 31.72 ± 0.10 | |
| J0741+2520 | S | 2019 September 07 | 136 | J0741+2706 | 3C147 | 0.58 × 0.53 | 3.89 ± 0.05 | 3.89 ± 0.03 |
| C | 2019 August 30 | 138 | J0741+2706 | 3C147 | 0.30 × 0.28 | 3.27 ± 0.03 | 3.22 ± 0.02 | |
| X | 2019 August 30 | 208 | J0741+2706 | 3C147 | 0.18 × 0.17 | 2.46 ± 0.02 | 2.46 ± 0.01 | |
| J1034+2033 | S | 2019 September 07 | 138 | J1051+2119 | 3C147 | 0.76 × 0.57 | 3.94 ± 0.06 | 4.00 ± 0.03 |
| C | 2019 August 30 | 136 | J1051+2119 | 3C147 | 0.38 × 0.29 | 2.92 ± 0.04 | 2.85 ± 0.02 | |
| X | 2019 August 30 | 138 | J1051+2119 | 3C147 | 0.26 × 0.18 | 1.88 ± 0.03 | 1.89 ± 0.02 | |
| J1146+4037 | S | 2019 September 07 | 128 | J1146+3958 | 3C147 | 0.87 × 0.55 | 11.05 ± 0.06 | 10.76 ± 0.03 |
| C | 2019 August 30 | 128 | J1146+3958 | 3C147 | 0.43 × 0.28 | 9.51 ± 0.03 | 9.46 ± 0.02 | |
| X | 2019 August 30 | 126 | J1146+3958 | 3C147 | 0.30 × 0.17 | 7.59 ± 0.04 | 7.51 ± 0.02 | |
| J1614+4640 | S | 2019 September 02 | 118 | J1613+3412 | 3C48 | 0.90 × 0.54 | 4.06 ± 0.16 | 3.84 ± 0.09 |
| C | 2019 August 14 | 148 | J1613+3412 | 3C48 | 0.42 × 0.27 | 3.13 ± 0.08 | 3.07 ± 0.04 | |
| X | 2019 August 11 | 148 | J1613+3412 | 3C48 | 0.31 × 0.19 | 1.96 ± 0.10 | 1.80 ± 0.05 | |
| J2228+0110 | S | 2019 September 02 | 136 | J2212+0152 | 3C48 | 0.72 × 0.54 | 0.24 ± 0.07 | 0.16 ± 0.03 |
| C | 2019 August 14 | 196 | J2212+0152 | 3C48 | 0.38 × 0.27 | 0.22 ± 0.03 | 0.21 ± 0.02 | |
| X | 2019 August 11 | 206 | J2212+0152 | 3C48 | 0.22 × 0.18 | 0.19 ± 0.04 | 0.13 ± 0.02 | |
| J2245+0024 | S | 2019 September 02 | 138 | J2247+0310 | 3C48 | 0.74 × 0.54 | 1.65 ± 0.06 | 1.61 ± 0.03 |
| C | 2019 August 14 | 192 | J2247+0310 | 3C48 | 0.38 × 0.27 | 1.75 ± 0.03 | 1.73 ± 0.02 | |
| X | 2019 August 11 | 208 | J2247+0310 | 3C48 | 0.22 × 0.18 | 1.40 ± 0.03 | 1.36 ± 0.02 |
Notes. Column 1: source name. Column 2: adopted VLA band. Column 3: observation date. Column 4: on-source integration time. Column 5: complex gain calibrator. Column 6: flux density scale calibrator. Column 7: the corresponding clean beam size for each observation. Columns 8−9: the integrated and peak flux density measured by the CASA 2D Gaussian tool. Errors shown here are fitting-type errors. During the model fitting in Sect. 3.1, we also considered additional 5% calibration errors.
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