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Table 1
Results of the fits using single and multi-temperature models (see text for details of the models) in different energy bands for the EPIC spectrum of the core (circle of 0.5′ radius) of A 2028 A.
| Model/Band | k T 0 | Z | Norm0 | k T 1 | Norm1 | σT/width | α | χ2/d.o.f. | Notes |
| (keV) | (keV) | (Z⊙) | (10-4 cm-5) | (keV) | (10-4 cm-5) | (keV) | |||
|
|
|||||||||
| 1T 0.5–10 | 2.95 ± 0.13 | 0.76 ± 0.14 | 1.70 ± 0.09 | 243/168 | Full spectrum | ||||
| 1T 0.5–6 | 2.59 ± 0.10 | 0.55 ± 0.10 | 1.93 ± 0.09 | 234/165 | no Fe-K | ||||
| 1T 0.5–3 | 1.99 ± 0.09 |
|
2.12 ± 0.09 | 178/148 | soft band Fe-L | ||||
| 2T 0.5–10 | 5.0 (fixed) |
|
|
|
|
204/167 | |||
| 2T 0.5–10 | 4.0 (fixed) |
|
|
|
|
204/167 | |||
| GDEM 0.5–10 |
|
|
1.69 ± 0.13 |
|
202/167 | ||||
| PDEM1 0.5–10 | 0.44 ± 0.08 |
|
1.36 ± 0.12 |
|
|
197/166 | |||
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