Table 2
Swift observations of GB 1310+487.
| ObsID | Date (UT) | JD | Exposure | UVOT | XRT | 0.3–10 keV unabs. flux | Γph X - ray |
| 2 455... | (ks) | (mag) | (cts/s) | (10-13 erg cm-2 s-1) | |||
|
|
|||||||
| Flare 1 period | |||||||
| 001 | 2009-11-27 | 162.77 | 8.7 | M2 = 21.1(2) | 0.022(2) | 16.7 ± 3.3 | 0.88 ± 0.18 |
| 002 | 2009-11-30 | 165.97 | 8.1 | U = 21.2(4), B> 21.3, V> 20.9 | 0.013(1) | ||
|
|
|||||||
| Flare 2 period | |||||||
| 003 | 2010-06-25 | 372.66 | 4.5 | U> 21.3, B> 21.5, V> 20.5 | 0.010(1) | 6.6 ± 1.5 | 1.15 ± 0.23 |
| 004 | 2010-07-03 | 380.65 | 4.5 | U = 20.9(3), B> 21.5, V> 20.3 | 0.009(1) | ||
| 005 | 2010-07-07 | 384.63 | 4.9 | U = 21.4(3) | 0.009(1) | ||
| 006 | 2010-07-11 | 388.68 | 4.6 | U = 21.3(3) | 0.010(1) | ||
|
|
|||||||
| post-flare period | |||||||
| 007 | 2011-06-03 | 717.12 | 9.5 | U = 21.1(2) | 0.006(1) | 5.5 ± 1.8 | 0.93 ± 0.34 |
Notes. Column designation: Column 1, observation number in the Swift archive omitting the leading 00031547; Cols. 2, 3, date of observation given by the Gregorian and Julian Date; Col. 4, exposure time in kiloseconds; Col. 5, Swift/UVOT photometry (here and later in the text the error in parentheses corresponds to the last decimal place of the value before the parentheses); Col. 6, Swift/XRT net count rate in counts/s and its uncertainty; Col. 7, 0.3–10 keV unabsorbed flux derived from fitting Swift/XRT data with the power-law model (datasets 1–2 and 3–6 are combined to increase the photon statistics); and Col. 8, X-ray spectral index (Γph X - ray) as defined in Sect. 1.
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