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Table 2
Warm-absorber fit results on the broad-band spectrum of Ark 564.
| Model | Parameters | χ2 /d.o.f. | |||||||
|
|
|||||||||
| Γx | N a | c N H | log (ξ) | ||||||
| PL+WA | 2.88 ± 0.01 |
|
|
1.0 ± 0.4 | 831/439 | ||||
|
|
|||||||||
| Γx | N a | c N H | log (ξ) |
t
|
f | ||||
| PL+WA+Cov(tie) | 2.92 ± 0.02 | 13 ± 1 |
|
1.0 ± 0.3 | ... | 0.95 ± 0.22 | 814.02/438 | ||
|
|
|||||||||
| Γx | N a | c N H | log (ξ) |
d
|
f | ||||
| PL+WA+Cov(untie) | 2.90 ± 0.02 |
|
|
1.0 ± 0.3 |
|
0.4 ± 0.1 | 813.51/437 | ||
|
|
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| Γx | N a | kT(eV) | N bb b | N H c | log (ξ) | ||||
| PL+BB+WA | 2.60 ± 0.02 | 10.4 ± 0.2 |
|
1.9 ± 0.2 |
|
1.0 ± 0.3 | 493/437 | ||
|
|
|||||||||
| Γx | N a | kT(eV) |  a |
c N H | log (ξ) |
e
|
f | ||
| PL+BB+WA+Cov | 3.0 ± 0.1 |
|
|
|
|
1.0 ± 0.2 |
|
0.6 ± 0.1 | 538.33/435 |
|
|
|||||||||
| Γx | N a | kT1(eV) | N bb1 b | kT2(eV) | N bb2 b | c N H | log (ξ) | ||
| PL+2BB+WA | 2.52 ± 0.07 |
|
|
2.2 ± 0.3 |
|
2.2 ± 5 |
|
1.1 ± 0.1 | 483/435 |
|
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|||||||||
| Γx(1) | Na(1) | kT(eV) | N bb b | Γx(2) | Na(2) |
|
log (ξ) | ||
| 2PL+BB+WA |
|
|
|
2.4 ± 0.3 | 2.5 ± 0.1 | 10 ± 1 |
|
1.1 ± 0.1 | 495.78/435 |
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