Table 3
Parameters of the most significant absorption lines and edges and of the broad emission line detected in the EPIC pn spectra of obs 4–9.
| Observation No. | 4 | 6 | 7 | 8 | 9 | |
|
|
||||||
| Comp. | ||||||
| Parameter | ||||||
| gau1 | ||||||
| Egau (keV) | 6.53  |
6.63 ± 0.13 | 6.60  |
6.65  |
6.71 ± 0.08 | |
| σ (keV) | 0.72  |
0.74 ± 0.19 | 0.62  |
0.61 ± 0.18 | 0.60 |
|
| kgau (10-3 ph cm-2 s-1) | 12 ± 4 | 8 ± 2 | 6 ± 3 | 9 ± 2 | 11 ± 2 | |
| EW (eV) | 185 ± 62 | 108 ± 27 | 84 ± 42 | 139 ± 31 | 177 ± 32 | |
| gau2 | ||||||
| Egau (keV) | 6.75  |
– | 6.73 (f) | 6.71 ± 0.02 | 6.73 ± 0.02 | |
| σ (keV) | < 0.04 | – | 0.008  |
< 0.07 | < 0.05 | |
| kgau (10-4 ph cm-2 s-1) | 12 ± 3 | – | 4 ± 3 | 16 |
14 ± 4 | |
| EW (eV) | 20 ± 5 | – | 6 ± 5 | 24  |
21 ± 6 | |
| gau3 | ||||||
| Egau (keV) | 7.02 ± 0.06 | 7.03 ± 0.02 | 7.00 ± 0.01 | 7.02 ± 0.02 | 7.03 ± 0.01 | |
| σ (keV) | < 0.03 | 0.07 ± 0.05 | < 0.06 | < 0.04 | < 0.06 | |
| kgau (10-4 ph cm-2 s-1) | 23 ± 4 | 20 ± 5 | 22 ± 3 | 18 ± 4 | 24  |
|
| EW (eV) | 41 ± 7 | 30 ± 8 | 34 ± 5 | 32 ± 7 | 42  |
|
| gau4 | ||||||
| Egau (keV) | 7.91  |
– | – | 7.91 ± 0.05 | 7.84  |
|
| σ (keV) | 0.003  |
– | – | 0.005  |
0.03  |
|
| kgau (10-4 ph cm-2 s-1) | 11 ± 4 | – | – | 5 ± 3 | 5 ± 4 | |
| EW (eV) | 33 ± 12 | – | – | 15 ± 9 | 13 ± 10 | |
| gau5 | ||||||
| Egau (keV) | 8.24  |
– | 8.20 ± 0.10 | 8.34 ± 0.05 | 8.26 ± 0.04 | |
| σ (keV) | 0.1  |
– | 0.1 |
< 0.097 | 0.02  |
|
| kgau (10-4 ph cm-2 s-1) | 10 ± 4 | – | 6 ± 3 | 5 ± 2 | 7 ± 3 | |
| EW (eV) | 37 ± 15 | – | 15 ± 8 | 18 ± 7 | 25 ± 11 | |
| edge1 | ||||||
| E (keV) | 8.83 (f) | 8.83 (f) | 8.83 (f) | 8.83 (f) | 8.83 (f) | |
| τ | 0.18 ± 0.03 | < 0.04 | < 0.04 | < 0.05 | 0.08 ± 0.04 | |
| edge2 | ||||||
| E (keV) | 9.28 (f) | 9.28 (f) | 9.28 (f) | 9.28 (f) | 9.28 (f) | |
| τ | < 0.03 | 0.04 ± 0.03 | 0.04 ± 0.03 | < 0.05 | < 0.09 | |
|
|
||||||
 (d.o.f.) |
1.08 (574) | 1.11 (694) | 1.03 (678) | 1.07 (530) | 1.18 (561) | |
Notes. f indicates that a parameter was fixed. The width of the absorption features was constrained to be ≲ 0.1 keV and of the broad emission feature to ≲ 1 keV. p indicates that the error of a parameter pegged at the limit imposed. gau1 corresponds to the broad emission feature and gau2–gau5 to narrow absorption features. The energy of the Fe xxv feature of obs 7 was unconstrained because of its low significance. Therefore, we fixed its energy considering that it would show a similar blueshift as the Fe xxvi feature for the same observation.
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.