Table 2.
Results of our Chandra spectral analysis.
| Detection | Power-law | Blackbody | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ObsID | Exposure | Distance | Γ | FX | LX | kTbb | Rbb | FX | LX |
| (ks) | (kpc) | (10−14 erg cm−2 s−1) | (1032 erg s−1) | (keV) | (10−2 km) | (10−14 erg cm−2 s−1) | (1032 erg s−1) | ||
| 16723 | 26.9 | 12 | 0.90 |
3.1 |
5.3 |
1.05 |
4.4 |
1.69 |
2.91 |
| " | " | 22 | " | " | 17.7 |
" | 8.0 |
" | 9.8 |
| 16725 | 28.6 | 12 | 1.6±1.4 | 0.91 |
1.6 |
1.0 |
2.6 |
0.55 |
0.95 |
| " | " | 22 | " | " | 5.3 |
" | 4.7 |
" | 3.2 |
| 16726 | " | 12 | 1.06 |
1.69 |
2.9 |
1.11 |
3.2 |
1.12 |
1.92 |
| " | " | 22 | " | " | 9.8 |
" | 5.8 |
" | 6.5 |
| Upper limit | Power-law | ||||||||
| ObsID | Exposure | Distance | Γ | FX | LX | ||||
| (ks) | (kpc) | (10−14 erg cm−2 s−1) | (1032 erg s−1) | ||||||
| 14643 | 4.6 | 12 | 0.90 (fixed) | < 4.1 | < 7 | ||||
| " | " | 22 | " | " | < 23.5 | ||||
| 16724 | 27.3 | 12 | " | < 0.9 | < 1.5 | ||||
| " | " | 22 | " | " | < 5.1 | ||||
| 16727 | " | 12 | " | < 0.7 | < 1.1 | ||||
| " | " | 22 | " | " | < 3.8 | ||||
| 167[24,27] | 54.5 | 12 | " | < 0.5 | < 0.8 | ||||
| " | " | 22 | " | " | < 2.6 | ||||
Notes. The NH was fixed to 1.03 × 1022 cm−2 (Kalberla et al. 2005). All the spectral parameters have been calculated when fitting the spectra in the 0.5–10 keV energy range. FX and LX represent the unabsorbed X-ray flux (0.5–10 keV) and X-ray luminosity (0.5–10 keV) respectively. The errors are 1σ. The flux and luminosity upper limits are calculated as mentioned in Sect. 2.3.
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