Table 3
X-ray properties of π Aqr derived from Swift observations.
| ObsID | HJD | Exp. time | Ct rate in T | HR = H∕S | NH | Norm |  |
 |
 (d.o.f.) |
|---|---|---|---|---|---|---|---|---|---|
| –2 458 000. | (s) | (cts s−1) | (1022 cm−2) | (10−3 cm−5) | (10−11 erg cm−2 s−1) | ||||
| 00010659001 | 223.678 | 1281 | 0.224 ± 0.017 | 0.91 ± 0.14 | 0.39 ± 0.12 | 8.04 ± 0.73 | 1.27 ± 0.11 | 1.48 ± 0.14 | 1.30 (28) |
| 00010659002 | 232.494 | 1426 | 0.288 ± 0.030 | 0.76 ± 0.16 | 0.11 ± 0.10 | 6.13 ± 0.65 | 1.05 ± 0.08 | 1.13 ± 0.12 | 1.40 (30) |
| 00010659003 | 236.481 | 980 | 0.240 ± 0.021 | 0.57 ± 0.10 | 0.18 ± 0.11 | 7.10 ± 0.78 | 1.19 ± 0.11 | 1.31 ± 0.15 | 0.60 (18) |
| 00010659005 | 255.425 | 968 | 0.301 ± 0.021 | 0.68 ± 0.10 | 0.20 ± 0.09 | 9.72 ± 0.85 | 1.62 ± 0.12 | 1.79 ± 0.14 | 0.76 (27) |
| 00010659006 | 261.000 | 1003 | 0.211 ± 0.019 | 0.89 ± 0.16 | 0.51 ± 0.13 | 8.18 ± 0.82 | 1.26 ± 0.10 | 1.50 ± 0.09 | 1.23 (17) |
| 00010659007 | 267.237 | 1018 | 0.297 ± 0.019 | 0.94 ± 0.12 | 0.45 ± 0.11 | 10.87 ± 0.97 | 1.69 ± 0.11 | 2.00 ± 0.18 | 0.73 (26) |
| 00010659008 | 272.692 | 1008 | 0.90 ± 0.27 | 6.97 ± 0.94 | 1.01 ± 0.11 | 1.28 ± 0.17 | 0.69 (15) | ||
| 00010659009 | 278.858 | 888 | 0.208 ± 0.017 | 4.19 ± 1.01 | 3.15 ± 0.64 | 14.95 ± 2.00 | 1.76 ± 0.20 | 2.75 ± 0.37 | 1.06 (16) |
| 00010659010 | 285.368 | 1013 | 0.308 ± 0.020 | 1.53 ± 0.21 | 1.76 ± 0.33 | 15.07 ± 1.58 | 1.97 ± 0.16 | 2.77 ± 0.27 | 1.22 (27) |
| 00010659011 | 291.413 | 389 | 0.204 ± 0.027 | 0.95 ± 0.25 | 0.76 ± 0.38 | 7.24 ± 1.45 | 1.07 ± 0.18 | 1.33 ± 0.28 | 1.53 (5) |
| 00010659013 | 309.148 | 824 | 0.339 ± 0.025 | 0.66 ± 0.09 | 0.15 ± 0.09 | 9.69 ± 0.98 | 1.64 ± 0.14 | 1.78 ± 0.18 | 1.15 (21) |
| 00010659014 | 317.543 | 920 | 0.236 ± 0.018 | 1.22 ± 0.19 | 0.70 ± 0.19 | 10.02 ± 1.09 | 1.49 ± 0.14 | 1.84 ± 0.21 | 0.63 (20) |
| 00010659016 | 324.685 | 1131 | 1.91 ± 0.49 | 7.92 ± 1.26 | 1.02 ± 0.15 | 1.46 ± 0.24 | 1.53 (10) | ||
| 00010659017 | 326.626 | 923 | 0.275 ± 0.030 | 2.07 ± 0.44 | 1.69 ± 0.44 | 13.72 ± 2.10 | 1.81 ± 0.21 | 2.53 ± 0.40 | 1.22 (16) |
| 00010659018 | 332.970 | 894 | 0.218 ± 0.031 | 0.90 ± 0.21 | 0.43 ± 0.20 | 10.65 ± 1.48 | 1.67 ± 0.20 | 1.96 ± 0.21 | 0.87 (13) |
| 00010659019 | 338.971 | 820 | 0.230 ± 0.032 | 1.13 ± 0.32 | 0.83 ± 0.26 | 9.99 ± 1.48 | 1.45 ± 0.19 | 1.84 ± 0.28 | 0.52 (9) |
| 00010659020 | 351.253 | 1008 | 0.285 ± 0.020 | 1.21 ± 0.18 | 0.63 ± 0.15 | 11.13 ± 1.04 | 1.68 ± 0.13 | 2.05 ± 0.19 | 0.74 (27) |
| 00010659022 | 362.741 | 923 | 0.269 ± 0.020 | 0.95 ± 0.14 | 0.58 ± 0.14 | 9.61 ± 0.92 | 1.46 ± 0.12 | 1.77 ± 0.17 | 0.87 (21) |
| 00010659024 | 386.429 | 879 | 0.333 ± 0.023 | 1.87 ± 0.29 | 1.01 ± 0.21 | 14.91 ± 1.51 | 2.12 ± 0.16 | 2.74 ± 0.28 | 0.97 (23) |
| 00010659026 | 390.210 | 960 | 0.195 ± 0.019 | 1.43 ± 0.30 | 0.67 ± 0.17 | 9.60 ± 0.98 | 1.43 ± 0.12 | 1.77 ± 0.18 | 0.33 (19) |
| 00010659027 | 392.907 | 1013 | 0.328 ± 0.022 | 1.35 ± 0.18 | 0.68 ± 0.14 | 13.58 ± 1.18 | 2.03 ± 0.14 | 2.50 ± 0.37 | 0.73 (30) |
| 00010659028 | 399.079 | 922 | 0.325 ± 0.027 | 1.14 ± 0.19 | 0.41 ± 0.11 | 12.49 ± 1.10 | 1.96 ± 0.13 | 2.30 ± 0.20 | 0.86 (29) |
| 00010659029 | 405.390 | 1038 | 0.191 ± 0.018 | 1.24 ± 0.25 | 0.80 ± 0.19 | 9.24 ± 0.97 | 1.35 ± 0.12 | 1.70 ± 0.18 | 0.68 (17) |
| 00010659031 | 416.608 | 1013 | 0.280 ± 0.022 | 1.27 ± 0.21 | 0.39 ± 0.12 | 10.36 ± 0.97 | 1.64 ± 0.14 | 1.90 ± 0.18 | 1.22 (25) |
| 00010659032 | 422.717 | 995 | 0.334 ± 0.023 | 0.90 ± 0.12 | 0.19 ± 0.07 | 10.85 ± 0.85 | 1.81 ± 0.13 | 1.99 ± 0.16 | 0.66 (29) |
| 00010659033 | 429.427 | 978 | 0.229 ± 0.020 | 1.16 ± 0.20 | 0.46 ± 0.24 | 8.33 ± 1.19 | 1.30 ± 0.12 | 1.54 ± 0.21 | 1.19 (22) |
| 00010659034 | 435.073 | 1098 | 0.152 ± 0.014 | 2.65 ± 0.60 | 1.72 ± 0.39 | 9.00 ± 1.21 | 1.18 ± 0.12 | 1.66 ± 0.22 | 0.58 (15) |
| 00010659035 | 441.179 | 978 | 0.203 ± 0.019 | 1.05 ± 0.20 | 0.31 ± 0.12 | 7.23 ± 0.78 | 1.16 ± 0.11 | 1.33 ± 0.14 | 0.99 (17) |
| 00010659036 | 446.889 | 812 | 0.246 ± 0.022 | 0.87 ± 0.15 | 0.52 ± 0.15 | 10.38 ± 1.11 | 1.60 ± 0.15 | 1.91 ± 0.15 | 0.69 (18) |
| 00010659039 | 465.012 | 983 | 0.63 ± 0.35 | 4.76 ± 0.94 | 0.72 ± 0.13 | 0.88 ± 0.14 | 1.73 (7) | ||
Notes. For count rates, total (T), soft (S), and hard (H) bands are defined as 0.5–10, 0.5–2, and 2–10 keV, respectively. For spectral fits, a model tbabs × phabs × apec was used, with the first absorption fixed to the interstellar value of 3.6 × 1020 cm−2 and the temperature fixed to 14.8 keV (see text for details). Errors (found using the “error” command for the spectral parameters and the absorption-corrected fluxes, or the “flux err” command for the observed fluxes) correspond to 1σ; when the errors were asymmetric, the highest value is provided here. Fluxes were determined in the 0.5–10.0 keV band; absorption-corrected fluxes, found using “cflux” in front of the thermal component, are corrected for the full (i.e., interstellar + local) absorbing column.
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