Table 2
Results of the fit to the steady emission from IGR J17451–3022 recorded from XMM-Newton (i.e., excluding the time intervals of the dips and the eclipses).
| Parameter | Value | Identified line | |||||
|
|
|||||||
| (units) | Steady emission | Dataset a | Dataset b | Dataset c | Dataset d | Dataset e | (rest energy) |
|
|
|||||||
| Time interval (ks) | 2.05–3.75 | 8.85–12.95 | 15.45–17.05 | 28.45–34.14 | 35.15–38.65 | ||
| NH (1022cm-2) |
|
5.6 ± 0.2 | 5.5 ± 0.2 | 5.1 ± 0.2 | 5.9 ± 0.1 |
|
|
| E1 (keV) |
|
– | – | – | – | 2.04 ± 0.03 | Si XIV (2.005 keV) |
| σ1 (keV) | 0.0 † | – | – | – | – | 0.0 † | |
| EW1 (keV) |
|
– | – | – | – | −0.028 ± 0.010 | |
| E2 (keV) |
|
|
2.52 ± 0.05 | – |
|
|
S XVI (2.62 keV) |
| σ2 (keV) |
|
0.24† | 0.0 † | – |
|
|
|
| EW2 (keV) |
|
|
|
– |
|
|
|
| E3 (keV) |
|
3.34 ± 0.06 | 3.26 ± 0.05 | – | 3.26 ± 0.09 | 3.26 ± 0.06 | Ar XVIII (3.32 keV) |
| σ3 (keV) |
|
0.0 † | 0.0 † | – |
|
|
|
| EW3 (keV) |
|
|
−0.015 ± 0.006 | – |
|
|
|
| E4 (keV) |
|
– |
|
– | 4.04 ± 0.05 |
|
Ca XX (4.100 keV) |
| σ4 (keV) |
|
– | 0.0 † | – |
|
0.0 † | |
| EW4 (keV) |
|
– | −0.011 ± 0.007 | – | −0.028 ± 0.016 |
|
|
| E5 (keV) |
|
– | – | – | – |
|
K XIX (4.797 keV) |
| σ5 (keV) |
|
– | – | – | – |
|
|
| EW5 (keV) |
|
– | – | – | – | −0.020 ± 0.018 | |
| E6 (keV) |
|
– | 5.73 ± 0.04 | 5.72 ± 0.05 |
|
– | Cr XXIII ? (5.681 keV) |
| σ6 (keV) | 0.0 † | – | 0.0 † | 0.0 † | 0.0 † | – | |
| EW6 (keV) |
|
– | −0.034 ± 0.012 | −0.04 ± 0.02 |
|
– | |
| E7 (keV) |
|
– |
|
|
|
|
Mn XXVI ? (6.130 keV) |
| σ7 (keV) |
|
– | 0.0 † | 0.0 † | 0.0 † | 0.0 † | |
| EW7 (keV) |
|
– |
|
|
|
−0.029 ± 0.015 | |
| E8 (keV) | 6.72 ± 0.01 |
|
6.78 ± 0.03 | 6.73 ± 0.04 |
|
6.72 ± 0.03 | Kα Fe XXV (6.70 keV) |
| σ8 (keV) | 0.0 † |
|
|
0.0 † | 0.0 † | 0.0 † | |
| EW8 (keV) | −0.14 ± 0.03 | −0.19 ± 0.06 | −0.24 ± 0.04 |
|
−0.12 ± 0.02 | −0.11 ± 0.02 | |
| E9 (keV) | 7.00 ± 0.03 | – | – | – | 6.94 ± 0.03 |
|
Kα Fe XXVI (6.97 keV) |
| σ9 (keV) | 0.0 † | – | – | – | 0.0 † | 0.0 † | |
| EW9 (keV) | −0.08 ± 0.02 | – | – | – | −0.11 ± 0.02 |
|
|
| E10 (keV) |
|
|
|
7.89 ± 0.06 | 7.87 ± 0.07 | – | Kβ Fe XXV (7.88 keV) |
| σ10 (keV) | 0.0 † | 0.0 † | 0.0 † | 0.0 † | 0.0 † | – | |
| EW10 (keV) |
|
|
−0.11 ± 0.04 |
|
−0.068 ± 0.033 | – | |
| Egabs (keV) |
|
|
|
9.7 † |
|
9.7 † | |
| σgabs (keV) |
|
|
|
|
0.7 ± 0.2 | 1.0 ± 0.1 | |
| S gabs |
|
|
|
|
|
3.5 ± 0.8 | |
| kTdiskbb (keV) |
|
|
1.38 ± 0.04 |
|
1.27 ± 0.03 | 1.24 ± 0.03 | |
| N diskbb |
|
7.8 ± 1.5 |
|
|
|
|
|
F0.5−10 keV
( ) |
|
|
|
|
|
|
|
| χ2/ν (d.o.f) | 1.41 (101) | 1.09 (100) | 1.42 (93) | 1.08 (98) | 1.07 (101) | 1.14 (98) | |
| Exposure time (s) | 16780 | 1675 | 3654 | 1580 | 5418 | 3456 | |
Notes. The phenomenological model used here comprises a diskbb component, plus the absorption in the direction of the source (tbabs in Xspec) and all the required Gaussian absorption lines to take into account the residuals visible in Fig. 7. We also give the results of the fits carried out with the same model on the time-resolved spectra extracted by dividing the steady emission in five time intervals. These intervals are indicated in the first row of the table in ks from the beginning of the observation (see the lightcurve in Fig. 4). EW indicates the equivalent width of each Gaussian line. All uncertainties are given at 90% confidence level.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.