Free Access
Table 3
Statistical results obtained from applying CoSch-CLEAN, MS-CLEAN, and CS to all the datasets A, B, and C.
| Point source (Sect. 3.2.1) | CoSch-CLEAN | CS |
|
|
||
| Relative flux density error high S/N, low S/N | 3%–23% | 3%–25% |
| Effective angular resolution (′) | 3.18′ × 2.55′ | 1.55′ × 1.09′ |
| Astrometric error (′) | <2′ | <1′ |
|
|
||
| Grid of point sources (Sect. 3.2.2) | CoSch-CLEAN | CS |
|
|
||
| Relative flux density error (Jy) | Fig. 4 | |
| Residuals: Std-dev in I (Jy/beam) | 1.7 | 3.6 |
| W50 (Sect. 3.3.1) | CoSch-CLEAN | MS-CLEAN | CS |
|
|
|||
| Effective angular resolution (′) | 2.8′ × 2.4′ | 2.8′ × 3.3′ | ~ 1′ × ~ 1′ |
| Reconstructed: total flux density in S (Jy) | 229.19 | 229.41 | 229.72 |
| Reconstructed: peak flux density in I (Jy/beam) | 0.72 | 0.96 | 0.79 |
| Residuals: rms in S (Jy/beam) | 4.6 × 10-4 | 2.71 × 10-2 | 3.1 × 10-4 |
| Residuals: Std-dev in I (Jy/beam) | 4.1 × 10-4 | 1.3 × 10-2 | 3.2 × 10-4 |
| Error: mean square error in I (Jy/pixel) | 8.9 × 10-5 | 1.0 × 10-4 | 4.8 × 10-5 |
| DR | 1729:1 | 75:1 | 2446:1 |
|
|
|||
| Cygnus A (Sect. 3.3.2) | CoSch-CLEAN | MS-CLEAN | CS |
|
|
|||
| Effective angular resolution (′) | 6.1′′ × 5.0′′ | 6.1′′ × 5.0′′ | 2.8′′ × 2.8′′ |
| Reconstructed: total flux density in S (Jy) | 10 576 | 10 560 | 10 506 |
| Reconstructed: Peak flux density in I (Jy/beam) | 315.5 | 309.3 | 465.7 |
| Residuals: rms in S (Jy/beam) | 0.37 | 0.35 | 0.09 |
| Residuals: Std-dev in I (Jy/beam) | 0.17 | 0.19 | 0.05 |
| DR | 1799:1 | 1619:1 | 8392:1 |
Notes. The statistics are defined in the text and appear when applicable. I means that the quantity has been evaluated on the entire image, S in a defined region of the image (typically around the source).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.