Table 6
Results of spectral fitting of neutron star atmosphere models (nsmaxg).
| Model | B |  (d.o.f.) |
N H | T eff,1 | T eff,2 | ϵ 1 | E W 1 | ϵ 2 | E W 2 | M ns |
|
|
log (LX) | d |
|
|
||||||||||||||
| (G) | (1021 cm-2) | (105 K) | (105 K) | (keV) | (keV) | (M⊙) | (km) | (km) | (erg s-1) | (kpc) | ||||
|
|
||||||||||||||
| (a) | 2e13 | 1.64 (166) |
|
|
– | – | – | 1.1 | 23 | – |
|
0.06 | ||
| 3e13 | 1.83 (168) |
|
|
– | – | – | 1.4 | 13 | – |
|
0.06 | |||
| (b) | 3e13 | 1.86 (166) |
|
3.2 | 79.4 | – | – | 1.4⋆ | 13 | ≪ 1 | 30.85 |
|
||
| (c) | 1e10 | 1.69 (167) | 5.46(21) |
|
– | – | – | 1.4⋆ | 13 | – | 31.21(7) | 0.09 | ||
| 7e12 | 1.92 (167) |
|
|
– | – | – | 1.4⋆ | 13 | – |
|
0.06 | |||
| 1e13 | 1.89 (167) |
|
|
– | – | – | 1.4⋆ | 13 | – |
|
0.08 | |||
| 3e13 | 1.56 (167) | 5.15(5) |
|
– | – | – | 1.4⋆ | 13 | – |
|
0.06 | |||
| (d) | 1e10 | 1.34 (164) |
|
|
10 | – |
|
0.3 | 1.4⋆ | 7.7(2.8) | < 1.8 |
|
1.001(8) | |
| 1e12 | 1.70 (164) |
|
3 | 10 | – |
|
0.4 | 1.4⋆ | ≪ 2 | 2.6 | 31(24) | 0.310(3) | ||
| 1.3e12 | 1.58 (164) |
|
|
10 | – |
|
0.3 | 1.4⋆ | 13(4) | < 2.0 |
|
0.975(8) | ||
| 2e12 | 1.58 (164) |
|
9 | 10 | – |
|
0.3 | 1.4⋆ |
|
< 2.3 |
|
0.998(3) | ||
| 4e12 | 1.47 (164) |
|
3 | 10 | – | 1.382(10) | 0.3 | 1.4⋆ |
|
|
|
0.03 | ||
| 7e12 | 1.42 (164) | 3.95(15) | 3 | 10 | – |
|
0.3 | 1.4⋆ |
|
|
|
0.05 | ||
| 1e13 | 1.41 (164) |
|
3 | 10 | – | 1.350(11) | 0.3 | 1.4⋆ |
|
0.254(16) |
|
0.03 | ||
| 2e13 | 1.37 (164) |
|
3 | 10 | – |
|
0.3 | 1.4⋆ | 11.7(6) |
|
|
0.06 | ||
| 3e13 | 1.40 (164) |
|
3 | 10 | – |
|
0.28 | 1.4⋆ |
|
|
|
0.15 | ||
| (e) | 1e10 | 1.05 (164) |
|
|
– | 0.554(14) | 0.07 | 1.349(16) | 0.27 | 1.4⋆ | 9 | – |
|
0.844(7) |
| 1e12 | 1.21 (164) |
|
7.4(5) | – |
|
0.08 |
|
0.3 | 1.4⋆ | 11 | – |
|
0.579(5) | |
| 1.3e12 | 1.20 (164) |
|
7.9(5) | – |
|
0.08 |
|
0.3 | 1.4⋆ | 11 | – |
|
0.702(6) | |
| 2e12 | 1.19 (164) |
|
|
– |
|
0.08 |
|
0.3 | 1.4⋆ | 10 | – |
|
|
|
| 4e12 | 1.16 (164) |
|
|
– |
|
0.08 |
|
0.29 | 1.4⋆ | 9 | – |
|
0.855(7) | |
| 7e12 | 1.15 (164) |
|
9.4(5) | – |
|
0.08 |
|
0.28 | 1.4⋆ | 10 | – |
|
|
|
| 1e13 | 1.14 (164) |
|
9.5(5) | – |
|
0.08 |
|
0.28 | 1.4⋆ | 9 | – |
|
|
|
| 2e13 | 1.13 (164) |
|
9.6(5) | – |
|
0.07 |
|
0.27 | 1.4⋆ | 8.5 | – |
|
0.996(8) | |
| 3e13 | 1.08 (164) |
|
|
– | 0.550(11) | 0.08 |
|
0.20 | 1.4⋆ | 12 | – |
|
0.956(8) | |
Notes. Errors are 1σ confidence levels (unconstrained
parameters are shown with no errors for illustrative purposes). All tbabs models
assume Wilms et al. (2000) abundances. Only
results of models with 
are shown. All listed models consist
of hydrogen atmospheres. Models: (a) tbabs(nsmaxg); (b) tbabs(nsmaxg+nsmaxg); (c)
vphabs(nsmaxg), with ZO ~ (1.2−1.3); (d)
tbabs(nsmaxg+nsmaxg+gauss), with fixed Gaussian σ2 =
0.2 keV; (e) tbabs(nsmaxg+gauss+gauss), with fixed Gaussian
σ1 =
0.1 keV and σ2 = 0.2 keV.
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.