Table 2.
Nuclear emission: X-ray spectral parameters.
| Satellite | Epoch | MJD | Exp (α) | Net counts | Γ | Flux (β) | Lum (ζ) |  |
χ2 (§)/-Cstat ( † )/ |
|---|---|---|---|---|---|---|---|---|---|
| (year/month/day) | (s) | (d.o.f.) | |||||||
| Chandra | 2000/02/26 | 51600 | 38 950 | 8095 | 2.48 |
7.5 |
8 | 3 |
267/262 |
| XMMκ | 2001/05/26 | 52055 | 31 740 | 3199 | 2.53 |
6.5 |
7 | 2 ± 1 | 293/270 |
| Chandra | 2004/01/24 | 53028 | 34 760 | 10413 | 2.14 |
9.0 |
10 |  |
142/163 |
| XMM(MOS1) | 2009/11/25 | 55160 | 10 530 | 2079 | 2.35 |
14 |
15 | < 4 | 55/68 |
| Swift | 2018 | 58132–58228 | 26 570 | 2357 | 2.05 |
16 ± 1 | 17 | < 3 | 100/99 |
| Swift | 2018/01/14 | 58132 | 3341 | 230 | 2.2 ± 0.2 | 14 ± 2 | 16 | ... | 9.3/16 |
| Swift | 2018/01/20 | 58138 | 2872 | 233 | 2.2 ± 0.2 | 13 ± 1 | 15 | ... | 22/14 |
| Swift | 2018/01/24 | 58142 | 1386 | 107 | 2.0 ± 0.3 |  |
20 | ... | 76c/83 |
| Swift | 2018/01/25 | 58143 | 2677 | 248 | 1.9 ± 0.2 | 10 ± 2 | 13 | ... | 11/14 |
| Swift | 2018/03/18 | 58195 | 964 | 121 | 2.0 ± 0.3 |  |
25 | ... | 63c/95 |
| Swift | 2018/03/19 | 58196 | 2145 | 254 | 2.1 ± 0.2 | 23 ± 3 | 30 | ... | 16/14 |
| Swift | 2018/03/20 | 58197 | 1503 | 189 | 1.9 ± 0.2 |  |
27 | ... | 94c/133 |
| Swift | 2018/03/21 | 58198 | 1668 | 197 | 2.1 ± 0.2 |  |
22 | ... | 137c/136 |
| Swift | 2018/03/23 | 58200 | 1838 | 183 | 2.1 ± 0.2 |  |
20 | ... | 90c/129 |
| Swift | 2018/03/24 | 58201 | 1376 | 141 | 2.3 ± 0.2 | 12 ± 2 | 15 | ... | 77c/103 |
| Swift | 2018/04/08 | 58216 | 760 | 57 | 2.1 ± 0.5 | 12 ± 3 | 16 | ... | 38c/47 |
| Swift | 2018/04/10 | 58218 | 1066 | 116 | 2.1 ± 0.3 |  |
21 | ... | 57c/94 |
| Swift | 2018/04/12 | 58220 | 899 | 91 | 2.0 ± 0.3 |  |
21 | ... | 57c/74 |
| Swift | 2018/04/14 | 58222 | 877 | 90 | 2.2 ± 0.3 |  |
15 | ... | 70c/68 |
| Swift | 2018/04/16 | 58224 | 967 | 88 | 2.2 ± 0.3 |  |
15 | ... | 61c/69 |
| Swift | 2018/04/18 | 58226 | 1024 | 77 | 2.0 ± 0.3 |  |
15 | ... | 62c/62 |
| Swift | 2018/04/20 | 58228 | 1211 | 121 | 1.8 ± 0.3 |  |
26 | ... | 83c/93 |
Notes.
(α)Net exposure time.
(β)Flux in units of 10−13 erg cm−2 s−1 in the 2–10 keV range.
(ζ)Luminosity in units of 1041 erg s−1 in the 2–10 keV range.
(κ)pn, MOS1, and MOS2 are fitted together using the same model but different power law normalization. Exposure time. Flux, and luminosity refer to MOS1.
( ⋆ )Column density in units of 1020 cm−2.
( † )c indicates C-statistic.
(§)When a thermal emission is included in the model, the χ2 value refers to the global fit.
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