Table 6.
FWHM values associated to the two sources reconstructed in the parametric images of the August 26, 2021 event, non-thermal regime, by applying VIS_FWDFIT and VIS_FWDFIT_PSO to STIX visibilities for different map center values.
| Shift (arcsec) | Source | FWHM (arcsec) |
||
|---|---|---|---|---|
| VIS_FWDFIT | VIS_FWDFIT_PSO | |||
| 65 | green!40 | |||
| Δx = +20 | First source | 6523.0 ± 1.0 | 4014.0 ± 2.0 | |
| Second source | 65 10.0 ± 40.0 | 4018.0 ± 2.0 | ||
| Δx = +15 | First source | 6518.0 ± 1.0 | 4014.0 ± 2.0 | |
| Second source | 6517.0 ± 8.0 | 4018.0 ± 2.0 | ||
| Δx = +10 | First source | 4013.0 ± 1.0 | 4014.0 ± 2.0 | |
| Second source | 4019.0 ± 3.0 | 4018.0 ± 2.0 | ||
| Δx = +5 | First source | 6512.0 ± 2.0 | 4014.0 ± 2.0 | |
| Second source | 6522.0 ± 2.0 | 4018.0 ± 2.0 | ||
| Δx = 0 | First source | 4014.0 ± 2.0 | 4014.0 ± 2.0 | |
| Second source | 4018.0 ± 2.0 | 4018.0 ± 2.0 | ||
| Δx = −5 | First source | 4014.0 ± 4.0 | 4014.0 ± 2.0 | |
| Second source | 4019.0 ± 3.0 | 4018.0 ± 2.0 | ||
| Δx = −10 | First source | 659.71 ± 0.03 | 4015.0 ± 3.0 | |
| Second source | 6522.0 ± 3.0 | 4018.0 ± 2.0 | ||
| Δx = −15 | First source | 65 1.0 ± 7.0 | 4014.0 ± 2.0 | |
| Second source | 6525.0 ± 9.0 | 4018.0 ± 2.0 | ||
| Δx = −20 | First source source | 65 0.0 ± 10.0 | 4015.0 ± 2.0 | |
| Second source | 6528.0 ± 3.0 | 4018.0 ± 2.0 | ||
Notes. Each entry in the third and fourth column is the estimated FWHM value when the map-center is shifted of Δx arcsec, while keeping Δy = 0. The red (green) color points out the reconstructions for which the relative variation of the FWHM is bigger (smaller) than 10% with respect to the optimal case Δx = 0, for at least one source.
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