Table 5.
Best-fit parameters obtained using either a broken power-law (BPL) or a power-law (PL) model fit the X-ray light curves.
| FXT | T0 (UTC) | Model | Tbreak (ks) | τ1 | τ2 | F0 (erg cm−2 s−1) | lnℒ (d.o.f.) | BIC |
|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
| 15 | 2014-05-07 04:26:03.74 | BPL | 3.7 ± 0.7 | –0.4 ± 0.1 | 2.9 ± 1.2 | (6.8 ± 1.9) × 10−14 | 1.3 (2) | –2.1 |
| PL | – | 0.0 ± 0.02 | – | (1.0 ± 1.1) × 10−14 | 9.1 (4) | 6.1 | ||
| 16 | 2015-03-22 07:02:29.30 | BPL | 2.2 ± 0.3 | 0.09 ± 0.1 | 2.0 ± 0.3 | (4.1 ± 0.8) × 10−13 | 26.5 (26) | 9.8 |
| PL | – | 0.6 ± 0.1 | – | (1.0 ± 0.1) × 10−11 | 79.3 (28) | 35.9 | ||
| 17 | 2015-11-21 03:26:16.08 | BPL | 0.4 ± 2.5 | 0.4 ± 0.1 | 0.4 ± 1.0 | (1.8 ± 3.9) × 10−13 | 6.8 (4) | 6.9 |
| PL | – | 0.3 ± 0.1 | – | (8.6 ± 6.7) × 10−13 | 6.3 (6) | 2.2 | ||
| 18 | 2016-11-25 10:12:22.22 | BPL | – | – | – | – | – | – |
| PL | – | 0.5 ± 0.1 | – | (4.6 ± 3.8) × 10−11 | 1.6 (2) | –0.8 | ||
| 19 | 2017-09-01 13:27:02.10 | BPL | 2.1 ± 0.3 | 0.1 ± 0.1 | 1.9 ± 0.5 | (5.5 ± 0.7) × 10−13 | 36.9 (38) | 9.5 |
| PL | – | 0.3 ± 0.1 | – | (3.3 ± 1.5) × 10−12 | 1.7 (40) | 27.7 | ||
| 20 | 2019-11-27 02:12:13.71 | BPL | 0.1 ± 0.01 | –1.0 ± 0.2 | 2.5 ± 0.3 | (4.2 ± 0.5) × 10−12 | 1.5 (6) | –9.7 |
| PL | – | 0.5 ± 0.3 | – | (3.5 ± 4.6) × 10−12 | 21.9 (8) | 12.5 | ||
| 21 | 2019-12-23 10:40:46.48 | BPL | – | – | – | – | – | – |
| PL | – | 0.4 ± 0.1 | – | (1.1 ± 0.8) × 10−12 | 4.6 (4) | 1.9 | ||
| 22 | 2021-04-23 22:15:36.63 | BPL | 4.4 ± 0.4 | 0.2 ± 0.1 | 3.8 ± 1.2 | (3.2 ± 0.4) × 10−13 | 17.9 (26) | –1.7 |
| PL | – | 0.4 ± 0.1 | – | (3.5 ± 1.6) × 10−12 | 46.1 (28) | 19.7 | ||
Notes. Column 2: start time when the count rate is ≳3-σ higher than the Poisson background level. Column 3: the model used. Column 4: the break time for the BPL model. Columns 5 and 6: the slope(s) for the BPL or PL model. Column 7: the normalization for the BPL or PL model. Columns 8 and 9: log-likelihood (lnℒ)/degrees-of-freedom (d.o.f.) and Bayesian Information Criterion (BIC) of the fit, respectively. Errors are quoted at the 1-σ confidence level.
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