Table C.1.
Swift/UVOT and XMM-Newton/OM observation log of J0456−20. MJD is the mid-date of the coverage for each observation; Texp is the effective exposure time in units of seconds; mAB is the apparent AB magnitude with the UVM2 filter; fλ is the UVM2 flux density in units of 10−17 erg cm−2 s−1 Å−1. Quoted uncertainties are at the 1σ confidence level; Nsigma is the detection significance. For observations with Nsigma < 3.0, the values of the 3σ upper limits are given for mAB and fλ; ObsID is the observation ID for each observation.
| MJD | Texp | mAB | fλ | Nsigma | ObsID | Instrument |
|---|---|---|---|---|---|---|
| 59284.89 | 1659 | 22.16 ± 0.28 | 3.0 ± 0.8 | 3.8 | 00014135001 | Swift |
| 59300.20 | 11800 | 21.07 ± 0.18 | 7.56 ± 1.01 | 9.7 | 0862770201 | XMM-Newton |
| 59320.20 | 3201 | 21.01 ± 0.09 | 8.7 ± 0.7 | 12.3 | 00014135002 | Swift |
| 59329.73 | 3285 | 21.10 ± 0.10 | 8.0 ± 0.7 | 11.9 | 00014135003 | Swift |
| 59340.45 | 1375 | 21.63 ± 0.20 | 5.0 ± 0.9 | 5.5 | 00014135004 | Swift |
| 59391.16 | 7628 | 21.64 ± 0.09 | 4.9 ± 0.4 | 12.1 | 00014135005 | Swift |
| 59399.00 | 6347 | 21.50 ± 0.09 | 5.5 ± 0.4 | 12.5 | 00014135006 | Swift |
| 59405.13 | 1778 | 21.41 ± 0.16 | 6.0 ± 0.9 | 7.1 | 00014135007 | Swift |
| 59413.03 | 1623 | 21.43 ± 0.17 | 5.9 ± 0.9 | 6.4 | 00014135008 | Swift |
| 59427.10 | 1609 | 21.64 ± 0.19 | 4.9 ± 0.8 | 5.8 | 00014135009 | Swift |
| 59434.71 | 1936 | 21.73 ± 0.19 | 4.5 ± 0.8 | 5.7 | 00014135010 | Swift |
| 59447.51 | 51100 | 21.99 ± 0.16 | 3.01 ± 0.47 | 8.7 | 0891801101 | XMM-Newton |
| 59453.89 | 2914 | 21.82 ± 0.17 | 4.1 ± 0.6 | 6.5 | 00014135011 | Swift |
| 59468.45 | 438 | < 21.59 | < 5.1 | 2.5 | 00014135012 | Swift |
| 59472.51 | 2504 | 21.85 ± 0.18 | 4.0 ± 0.7 | 6.0 | 00014135013 | Swift |
| 59481.30 | 127500 | 22.91 ± 0.19 | 1.27 ± 0.24 | 7.4 | 0891801701 | XMM-Newton |
| 59481.49 | 2458 | 22.33 ± 0.25 | 2.6 ± 0.6 | 4.5 | 00014135014 | Swift |
| 59496.67 | 3034 | 22.66 ± 0.29 | 1.9 ± 0.5 | 3.7 | 00014135016 | Swift |
| 59510.83 | 2738 | 22.49 ± 0.26 | 2.2 ± 0.5 | 4.1 | 00014135017 | Swift |
| 59524.53 | 1349 | 21.74 ± 0.21 | 4.5 ± 0.8 | 5.3 | 00014135018 | Swift |
| 59527.63 | 1401 | 21.88 ± 0.24 | 3.9 ± 0.8 | 4.6 | 00014135019 | Swift |
| 59529.87 | 440 | 21.63 ± 0.33 | 4.9 ± 1.5 | 3.3 | 00014135021 | Swift |
| 59543.72 | 1045 | 21.32 ± 0.17 | 6.6 ± 1.0 | 6.3 | 00014135022 | Swift |
| 59557.41 | 2288 | 21.64 ± 0.15 | 4.9 ± 0.7 | 7.2 | 00014135023 | Swift |
| 59566.74 | 604 | 21.36 ± 0.26 | 6.3 ± 1.5 | 4.3 | 00014135025 | Swift |
| 59572.58 | 2591 | 21.46 ± 0.13 | 5.7 ± 0.7 | 8.7 | 00014135026 | Swift |
| 59584.90 | 2835 | 21.74 ± 0.15 | 4.5 ± 0.6 | 7.5 | 00014135027 | Swift |
| 59635.12 | 9989 | 21.91 ± 0.10 | 3.8 ± 0.3 | 11.7 | 00014135999a | Swift |
| 59643.68 | 2452 | 21.96 ± 0.20 | 3.6 ± 0.7 | 5.4 | 00014135033 | Swift |
| 59650.19 | 2935 | 22.61 ± 0.29 | 2.0 ± 0.5 | 3.8 | 00014135034 | Swift |
| 59656.16 | 2640 | 22.11 ± 0.21 | 3.1 ± 0.6 | 5.3 | 00014135036 | Swift |
| 59663.24 | 2734 | 22.28 ± 0.25 | 2.7 ± 0.6 | 4.5 | 00014135037 | Swift |
| 59670.56 | 3088 | 22.01 ± 0.20 | 3.5 ± 0.6 | 5.5 | 00014135038 | Swift |
| 59678.08 | 4241 | 22.25 ± 0.20 | 2.7 ± 0.5 | 5.6 | 00014135039 | Swift |
| 59684.37 | 2894 | 22.16 ± 0.22 | 3.0 ± 0.6 | 4.9 | 00014135040 | Swift |
| 59691.98 | 6307 | 22.05 ± 0.14 | 3.4 ± 0.4 | 7.8 | 00014135041 | Swift |
| 59698.54 | 2592 | < 22.63 | < 2.0 | 2.2 | 00014135042 | Swift |
| 59705.34 | 2443 | 22.22 ± 0.26 | 2.9 ± 0.7 | 4.2 | 00014135043 | Swift |
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