Table 1
Best-fitting values for a 2-temperature apec model for the ACIS (S and I) spectrum of the innermost ring.
| T1 fixed | T2 free | N1/N2 | Z Fe | C-stat |
|
|
||||
| 0.3 | 4.94 |
0.261 | 3.61 |
199.82 |
| 0.5 | 4.98 |
0.094 | 3.69 |
200.01 |
| 0.8 | 4.95 |
0.052 | 3.78 |
200.56 |
| 1.0 | 4.97 |
0.050 | 3.78 |
200.57 |
| 1.5 | 5.11 |
0.085 | 3.87 |
200.72 |
| 2.0 | 5.17 |
0.147 | 4.05 |
201.20 |
| 2.5 | 4.91 |
0.134 | 4.21 |
201.65 |
| – | 4.44 |
– | 4.01 |
202.00 |
Notes. The columns are: (1) first component temperature that is fixed; (2) best-fit of the second component temperature; (3) ratio between the normalizations of the first and second components; (4) best fit of the Fe abundance in solar units; (5) Cash statistics of the best fit (always for 251 PHA bins). The last row shows the result for the single temperature fit of the spectrum.
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