Table 3
Best-fit results for the multi-temperature fitting of the region with the high-alpha parameter.
| Parameter | wdem | wdem a | gdem-log | gdem-lin | 4-tempb | 4-tempc | 1-temp |
|
|
|||||||
| kTmax (keV) | 3.69 ± 0.05d | 3.36 ± 0.06d | 2.06 ± 0.02 | 2.16 ± 0.03 | – | 3.65 ± 0.16 | – |
| kTmean (keV) | 2.25 ± 0.04 | 2.22 ± 0.04 | – | – | 2.28 ± 0.03 | 2.25 ± 0.12 | 1.482 ± 0.011 |
| α | 4.0 ± 0.8 | 1.14 ± 0.05 | – | – | – | – | – |
| βkTmax (keV) | 0.61 ± 0.02 | – | – | – | – | – | – |
| σT (keV) | – | – | 0.338 ± 0.007e | 1.34 ± 0.05 | – | – | – |
| Fe | 1.20 ± 0.03 | 1.27 ± 0.03 | 1.14 ± 0.02 | 1.22 ± 0.04 | 1.27 ± 0.04 | 1.21 ± 0.05 | 0.438 ± 0.015 |
| C-stat/d.o.f. | 1207/940 | 1270/941 | 1199/941 | 1262/941 | 1163/940 | 1160/939 | 2795/942 |
Notes. (a) In this wdem model the low-temperature cut-off (β) is fixed to 0.1. (b) 4-Temperature model with the temperatures fixed to 0.5, 1, 2, and 4 keV. (c) 4-Temperature model with the maximum temperature free and other temperatures coupled with factors 0.5, 0.25, and 0.125. (d) This is the maximum temperature of the DEM distribution kTmax. (e) This is the σT of the Gaussian DEM distribution on a logarithmic grid.
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