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Table 5
Best-fit values for the fitting of the synthetic XRISM/Resolve spectrum of the Cas A southeastern region by adopting two thermal components, in the mild-ejecta and pure-metal ejecta scenarios.
| Parameter | NEI+NEI (mild-ejecta) | NEI+NEI (pure-metal ejecta) | NEI+NEI (pure-metal ejecta) 250ks |
|---|---|---|---|
| nH (1022cm−2) | 1.5 (frozen) | ||
| kT (keV) | 0.5 |
1.96 ± 0.05 | 1.62 |
| τ (1011s cm−3) | 1.10 |
1.13 ± 0.04 | 1.8 |
| EM (1058 cm−3) | 0.19 |
0.150± 0.004 | 0.20 |
| kT (keV) | 3.9 |
2.90 ± 0.01 | 2.89 ± 0.03 |
| τ (1011 s cm−3) | 1.53 |
2.51± 0.02 | 2.51 |
| EM (1058 cm−3) | 0.34 |
0.056 ± 0.005 | 0.002 |
| Si | 0.415 |
0.77 ± 0.08 | 1 ± 1 |
| S | 0.377 |
0.93 |
2.0 |
| Ar | 0.25 ± 0.02 | 0.4 ± 0.2 | 1 |
| Ca | 0.15 |
0.49 ± 0.2 | 1 |
| Fe | 10 (frozen) | 119 |
300 |
 (d.o.f.) |
11.85 (5005) | 2.11 (5004) | 0.65 (4709) |
| Counts | 1.4 × 106 | 3.5 × 105 | |
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