Open Access
Table 9.
Ring parameters for 2018 April 21 CASA data.
| d μas) | w (μas) | Position angle (°) | A | fC | |||
|---|---|---|---|---|---|---|---|
| DIFMAP | |||||||
| April 21 | Band 1 | REx |  |
 |
220.1 ± 20.5 |  |
 |
| VIDA |  |
 |
215.8 ± 2.7 |  |
 |
||
| Band 2 |  |
 |
208.2 ± 41.4 |  |
 |
||
 |
 |
205.7 ± 2.1 |  |
 |
|||
| Band 3 |  |
 |
218.4 ± 23.3 |  |
 |
||
 |
 |
216.0 ± 2.8 |  |
 |
|||
| Band 4 |  |
 |
216.1 ± 10.3 |  |
 |
||
 |
 |
213.2 ± 2.8 |  |
 |
|||
| eht-imaging | |||||||
| April 21 | Band 1 | REx |  |
 |
212.1 ± 20.7 |  |
 |
| VIDA |  |
 |
210.1 ± 2.8 |  |
 |
||
| Band 2 |  |
 |
208.7 ± 17.6 |  |
 |
||
 |
 |
209.7 ± 2.8 |  |
 |
|||
| Band 3 |  |
 |
215.4 ± 2.3 |  |
 |
||
 |
 |
212.8 ± 2.6 |  |
 |
|||
| Band 4 |  |
 |
212.1 ± 19.6 |  |
 |
||
 |
 |
212.9 ± 2.4 |  |
 |
|||
| SMILI | |||||||
| April 21 | Band 1 | REx |  |
 |
214.4 ± 19.5 |  |
 |
| VIDA |  |
 |
218.6 ± 3.0 |  |
 |
||
| Band 2 |  |
 |
214.6 ± 9.0 |  |
 |
||
 |
 |
214.0 ± 2.6 |  |
 |
|||
| Band 3 |  |
 |
219.7 ± 7.7 |  |
 |
||
 |
 |
213.8 ± 3.1 |  |
 |
|||
| Band 4 |  |
 |
218.5 ± 13.5 |  |
 |
||
 |
 |
217.1 ± 2.9 |  |
 |
|||
| THEMIS | |||||||
| April 21 | Band 1 | REx |  |
 |
198.3 ± 18.0 |  |
 |
| VIDA |  |
 |
211.1 ± 2.5 |  |
 |
||
| Band 2 |  |
 |
216.9 ± 5.6 |  |
 |
||
 |
 |
223.2 ± 2.7 |  |
 |
|||
| Band 3 |  |
 |
213.1 ± 1.5 |  |
 |
||
 |
 |
219.0 ± 1.5 |  |
 |
|||
| Band 4 |  |
 |
213.5 ± 1.3 |  |
 |
||
 |
 |
220.8 ± 1.4 |  |
 |
|||
| Comrade | |||||||
| April 21 | Band 1 | REx |  |
 |
222.1 ± 4.7 |  |
 |
| VIDA |  |
 |
217.7 ± 2.9 |  |
 |
||
| Band 2 |  |
 |
222.8 ± 13.5 |  |
 |
||
 |
 |
221.4 ± 3.0 |  |
 |
|||
| Band 3 |  |
 |
210.1 ± 7.6 |  |
 |
||
 |
 |
210.7 ± 1.1 |  |
 |
|||
| Band 4 |  |
 |
213.2 ± 9.0 |  |
 |
||
 |
 |
211.4 ± 2.5 |  |
 |
|||
Notes. Median values and 68% confidence intervals are shown for diameter, width, asymmetry, and fractional central brightness depression (d, w, A, fC). Circular mean and standard deviation values are shown for the position angle.
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