Table 1.
Image parameters for all analysed VLBA observations from April 4, 2017, with natural weighting.
| Array | ν | rms (1a) | rms (1b) | Speak (2) | Stot (3) | bmaj (4) | bmin (5) | PA (6) | DR (7) |
|---|---|---|---|---|---|---|---|---|---|
| [GHz] |  |
 |
 |
[Jy] | [mas] | [mas] | [°] | ||
| VLBA | 1.5 | 0.07 | 0.19 | 0.33 | 0.62 | 13.22 | 5.37 | −5.9 | 1737:1 |
| VLBA | 5.0 | 0.05 | 0.08 | 0.48 | 1.04 | 3.89 | 1.65 | −5.0 | 6000:1 |
| VLBA | 8.4 | 0.07 | 0.10 | 0.36 | 1.12 | 2.30 | 0.99 | −5.0 | 3600:1 |
| VLBA | 15.3 | 0.06 | 0.08 | 0.25 | 0.82 | 1.26 | 0.55 | −6.3 | 3125:1 |
| VLBA | 22.2 | 0.08 | 0.09 | 0.18 | 0.80 | 0.86 | 0.34 | −5.0 | 2000:1 |
| VLBA | 43.1 | 0.10 | 0.10 | 0.15 | 0.59 | 0.45 | 0.19 | −4.4 | 1500:1 |
| RA-G (a) | 22.3 | 0.04 | 0.04 | 0.11 | 0.42 | 0.44 | 0.39 | 44 | 1000:1 |
Notes. (1)(a) Root-mean-square (rms) noise level of image (b) rms inside a structure-free window far away from the source structure. (2)Peak flux density. (3)Total recovered flux density. (4)−(6)Major and minor axes and major axis position angle of the restoring beam. (7)Dynamic range: ratio between the map peak and the rms inside a structure-free window far away from the source structure. (a)RadioAstron ground-array image parameters.
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