Table 10
X-ray count rates.
| Mission – Instrument | HJD | Observed count rate | Relative | Simulated count rate | Relative | Energy |
| error | deviation1 | range | ||||
| –2 440 000 | (10-2 cts s-1) | (%) | (10-2 cts s-1) | (%) | keV | |
|
|
||||||
| XMM–Newton MOS2 | 15 686.713 | 5.42 ± 0.18 | 3.3 | 4.97 ± 0.15 | 8.4 | 0.2–10 |
| 15 694.768 | 5.03 ± 0.18 | 3.6 | 5.00 ± 0.16 | 0.5 | 0.2–10 | |
| 15 700.152 | 5.54 ± 0.17 | 3.1 | 5.14 ± 0.15 | 7.1 | 0.2–10 | |
| XMM–Newton pn | 15686.713 | 17.95 ± 0.41 | 2.3 | 15.87 ± 0.34 | 11.6 | 0.2–10 |
| 15 694.768 | 15.28 ± 0.40 | 2.6 | 15.84 ± 0.35 | –3.7 | 0.2–10 | |
|
|
||||||
| Einstein–IPC2 | 3972.050 | 1.00 ± 0.40 | 40.0 | 2.09 ± 0.20 | –109.4 | 0.2–4.5 |
| ROSAT All Sky Survey | 8210.000 | 3.26 ± 0.873 | 26.7 | 3.20 ± 0.57 | 1.8 | 0.1–2 |
| ROSAT PSPC | 6928.585 | 4.50 ± 0.50 | 11.1 | 2.66 ± 0.25 | 40.8 | 0.1–2 |
| 9508.604 | 3.30 ± 0.50 | 15.2 | 2.54 ± 0.26 | 23.1 | 0.1–2 | |
| ROSAT HRI | 9669.924 | 1.17 ± 0.11 | 9.8 | 1.68 ± 0.06 | –43.6 | 0.1–2 |
| Swift | 15 635.350 | 1.75 ± 0.42 | 24.1 | 1.20 ± 0.24 | 31.5 | 0.3–10 |
| Chandra | 15 213.113 | 6.58 ± 0.12 | 1.8 | 6.30 ± 0.10 | 4.3 | 0.2–10 |
Notes.
The relative error corresponds to 100 × (obs−simulation)/obs. The count rates have been obtained with XSPEC.
Values from Pollock (1987).
This value is in good agreement with the one derived by Pollock et al. (1995) who reported a ROSAT All Sky Survey PSPC count rate of (3.26 ± 0.87) × 10-2 cts s-1. Note that ROSAT HRI had little or no energy resolution.
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