Table 6.
Results of the cross-comparison of the synthetic images using the EHT 2017 and the advanced EHT configuration.
| Boson star | Dilaton | Kerr (a* = 0.6) | Kerr (a* = 0.94) | |
|---|---|---|---|---|
| EHT 2017 configuration | ||||
| Boson star | 0.03 (0.98) | 0.17 (0.79) | 0.18 (0.81) | 0.10 (0.88) |
| Dilaton | 0.16 (0.83) | 0.13 (0.92) | 0.13 (0.92) | 0.12 (0.93) |
| Kerr (a* = 0.6) | 0.16 (0.85) | 0.14 (0.91) | 0.13 (0.92) | 0.12 (0.94) |
| Kerr (a* = 0.94) | 0.09 (0.89) | 0.18 (0.83) | 0.18 (0.85) | 0.09 (0.93) |
| EHT including space antenna | ||||
| Boson star | 0.03 (0.98) | 0.13 (0.88) | 0.14 (0.85) | 0.09 (0.89) |
| Dilaton | 0.17 (0.78) | 0.10 (0.96) | 0.11 (0.96) | 0.12 (0.88) |
| Kerr (a* = 0.6) | 0.17 (0.80) | 0.11 (0.96) | 0.10 (0.96) | 0.12 (0.91) |
| Kerr (a* = 0.94) | 0.09 (0.89) | 0.13 (0.89) | 0.13 (0.92) | 0.07 (0.96) |
Notes. The values correspond to the DSSIM and the numbers in brackets indicate the normalised cross correlation coefficient (nCCC). Small values for the DSSIM and numbers close to 1 for the nCCC indicate well-matched images (lowest DSSIM values are indicated in bold).
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