Table 1.
Radio observations of A520.
| Telescope | LOFAR 145 MHz | GMRT 323 MHz | VLA 1.5 GHz |
|---|---|---|---|
| Project | LC7_25 | 27_070 | AF349, AC706, AC776 |
| Observation IDs | L584441, L589773 | 7394, 8007 | – |
| Configuration | – | – | C, D |
| Calibrator | 3C 147 | 3C 147 | 3C 48, 3C 147, 3C 138, 3C 286 |
| Observation dates | Apr. 17 and 25, 2017 | Oct. 31, 2014; Aug. 21, 2015 | 1998 Dec. 8; 1999 Mar. 19 |
| 2004 Aug. 30; 2005 Aug. 30 | |||
| Total on-source time (h) | 7.3 | 17.2 | 15.1 |
| Correlations | Full Stokes | RR, LL | Full Stokes |
| Bandwidth (MHz) | 48 | 33 | 150 |
| Channel width (MHz) | 0.0122 | 0.1302 | 50 |
| Time resolution (s) | 1 | 16 | 10 |
| Number of (used) stations | 62 | 28 | 24 − 27 |
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