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Table A.2.

Observation log of public Chandra observations and the detected X-ray flares in 2016–2018.

Observations Flares

Mean
ObsID PI Start (a) End (a) Exposure (b) Instrument Nonflaring level Number Start Stop Duration Count rate (c) Flux (d)
(UT) (UT) (ks) (count s−1) (UT) (UT) (s) (count s−1) (10−12 erg s−1 cm−2)
18055 Garmire 2016-02-13 08:59:23 2016-02-13 16:26:00 22.7 ACIS-S 0.0083 ± 0.0009 1 12:14:10 12:24:07 597 0.078 ± 0.012 11.6 ± 1.80
2 13:00:45 13:20:23 1178 0.067 ± 0.008 9.92 ± 1.18
3 15:30:17 >16:26:00 >2129 0.078 ± 0.006 11.6 ± 0.89
18056 Garmire 2016-02-14 14:46:01 2016-02-14 21:44:19 21.8 ACIS-S 0.0090 ± 0.0006 ... ......... ......... ...... ............ ............
18731 Baganoff 2016-07-12 18:23:59 2016-07-13 18:42:51 78.4 ACIS-S 0.0047 ± 0.0003 4 22:43:30 22:58:26 827 0.029 ± 0.004 4.29 ± 0.59
18732 Baganoff 2016-07-18 12:01:38 2016-07-19 12:09:00 76.6 ACIS-S 0.0047 ± 0.0003 5 14:56:24 15:47:03 3039 0.017 ± 0.003 2.52 ± 0.44
18057 Garmire 2016-10-08 19:07:12 2016-10-09 02:38:59 22.7 ACIS-S 0.0054 ± 0.0005 ... ......... ......... ...... ............ ............
18058 Garmire 2016-10-14 10:47:43 2016-10-14 18:16:44 22.7 ACIS-S 0.0047 ± 0.0004 ... ......... ......... ...... ............ ............
19726 Garmire 2017-04-06 03:47:13 2017-04-06 12:51:35 28.2 ACIS-S 0.0045 ± 0.0004 ... ......... ......... ...... ............ ............
19727 Garmire 2017-04-07 04:57:18 2017-04-07 13:53:40 27.8 ACIS-S 0.0059 ± 0.0004 ... ......... ......... ...... ............ ............
20041 Garmire 2017-04-11 03:51:22 2017-04-11 13:56:48 30.9 ACIS-S 0.0066 ± 0.0006 6 08:23:04 09:56:59 2635 0.085 ± 0.006 12.6 ± 0.89
20040 Garmire 2017-04-12 05:18:22 2017-04-12 14:15:52 27.5 ACIS-S 0.0051 ± 0.0004 ... ......... ......... ...... ............ ............
19703 Baganoff 2017-07-15 22:36:07 2017-07-17 00:01:34 81.0 ACIS-S 0.0046 ± 0.0003 7 <22:36:07 24:30:18 >5736 0.008 ± 0.002 1.18 ± 0.22
8 37:10:52 37:29:56 1144 0.029 ± 0.005 4.29 ± 0.74
19704 Baganoff 2017-07-25 22:57:27 2017-07-26 23:28:30 78.4 ACIS-S 0.0050 ± 0.0002 ... ......... ......... ...... ............ ............
20344 Neilsen 2018-04-20 03:17:44 2018-04-20 12:59:33 29.1 ACIS-S 0.0053 ± 0.0004 ... ......... ......... ...... ............ ............
20345 Neilsen 2018-04-22 03:31:16 2018-04-22 12:57:15 28.5 ACIS-S 0.0037 ± 0.0003 ... ......... ......... ...... ............ ............
20346 Neilsen 2018-04-24 03:33:43 2018-04-24 13:21:29 29.0 ACIS-S 0.0042 ± 0.0004 9 05:00:57 05:53:52 3140 0.124 ± 0.006 18.4 ± 0.89
20347 Neilsen 2018-04-25 03:37:23 2018-04-25 14:13:22 32.8 ACIS-S 0.0048 ± 0.0004 ... ......... ......... ...... ............ ............

Notes.

(a)

First and last good time intervals (GTI) start and stop in universal time (UT) referential.

(b)

The sum of the GTI.

(c)

The flare mean count rates are background subtracted.

(d)

Mean unabsorbed flux between 2 and 10 keV determined for NH = 14.3 × 1022 cm−2 and Γ = 2 with the pile-up taken into account.

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