Table 2
Best-fit background parameters.
| Local hot bubble | Milky Way halo | Hot foreground | CXB | |||||||||||||
| kT (keV) | norm a | kT (keV) | norm a | kT (keV) | norm a | Γ | norm b | χ2/d.o.f. | ||||||||
| [ × 10-3 ] | [ × 10-3 ] | [ × 10-3 ] | [ × 10-4 ] | |||||||||||||
|
|
||||||||||||||||
| Case1 | 0.08 (fix) | 24.2 ± 2.2 |
|
4.9 ± 0.4 | – | – | 1.41 (fix) | 9.4 ± 0.4 | 166/133 | |||||||
| Case2 | 0.08 (fix) | 43.2 ± 5.0 |
|
6.1 ± 1.5 |
|
|
1.41 (fix) | 9.2 ± 0.4 | 159/132 | |||||||
Notes.
Normalization of the apec component scaled by a factor 20 × 20π = 400π (see text). 
, where DA is the angular diameter distance to the source.
The CXB intensity normalization in Kushino et al. (2002) is 9.6 × 10-4 for Γ = 1.41 in units of photons keV-1 cm-2 s-1 at 1 keV.
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