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GRB Time
[UT]
Trigger
Number
BAT RA
(J2000)
BAT Dec
(J2000)
BAT T90
[sec]
BAT Fluence
(15-150 keV)
[10-7 erg/cm2]
XRT RA
(J2000)
XRT Dec
(J2000)
XRT Time to First
Observation
[sec]
XRT Early Flux
(0.3-10 keV)
[10-11 erg/cm2/s]
UVOT RA
(J2000)
UVOT Dec
(J2000)
UVOT Time to
First Observation
[sec]
UVOT Magnitude Other Observatory Detections Redshift Host Galaxy Comments References
210514A n/a n/a 2.9670
00:11:52.1
-21.8750
-21:52:30.0
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a       BAT: Given the loss of real-time antennae for half the sky, we are unable to confirm the nature, location, or exact time of this trigger until the full data have been downloaded, in approximately 3 hours (by around 22:00 UT). BAT: GCN 30008
210509A 14:32:20 1047531 350.363
23:21:27.1
6.650
06:39:00.0
8.22 3.1 23:21:30.15 06:40:16.5 4412.6 10 n/a n/a 3202 V>19.0       Due to an observing constraint, Swift did not slew until T0+50 minutes. BAT: GCN 29970; GCN 29975
XRT: GCN 29971; GCN 29973; GCN 29977; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29978
210506A 00:39:48.54 BAT/GUNAO n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a IPN     BAT-GUANO position retracted. Outside BAT FOV.
XRT and UVOT follow-up has been requested.
XRT: Three uncatalogued X-ray sources have been detected consistent with being within 296 arcsec of the Swift/BAT position, however none of them is above the RASS limit or shows definitive signs of fading.
BAT: GCN 29947; GCN 29969
XRT: GCN 29960
210504A 13:54:53 1046782 222.379
14:49:31.0
-30.557
-30:33:25.2
135.06 27 14:49:33.89 -30:32:00.5 218 n/a 14:49:34.03 -30:32:02.2 218 V>18.26 NOT, VLT, Lowell Discovery Telescope (4.3m) 2.077 (VLT: absorption)     BAT: GCN 29929; GCN 29930; GCN 29939
XRT: GCN 29929; GCN 29942; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29929; GCN 29933
Redshift: GCN 29944 (VLT)
210430A 10:42:10 1046014 57.185
03:48:44.4
45.080
45:04:48.0
11.53 9.9 n/a n/a n/a n/a n/a n/a n/a n/a       The BAT position is sun-constrained for Swift until July 8 2021. BAT: GCN 29914; GCN 29918
210422A 17:47:10 1044678 21.077
01:24:18.5
42.100
42:06:00.0
39.00 7.2 n/a n/a n/a n/a n/a n/a n/a n/a       Due to a Sun observing constraint, Swift cannot slew to the BAT position until 2021 June 4. BAT: GCN 29886; GCN 29897
210421B 10:54:44 BAT/GUANO 270.817
18:03:16.1
56.828
56:49:40.8
n/a n/a n/a n/a 45100 n/a n/a n/a n/a n/a Fermi (GBM), AstroSat CZTI     Fermi: GCN 29870
XRT: no detection
BAT: GCN 29877
XRT: GCN 29892
210421A 00:27:30 1044426 104.882
06:59:31.7
4.928
04:55:40.8
79.52 20 06:59:29.86 04:55:20.0 87.81 1510 n/a n/a 96 V>17.9 GECAM-B     UVOT: no detection BAT: GCN 29849; GCN 29893
XRT: GCN 29849; GCN 29865; GCN 29875; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29849; GCN 29885
210420B 18:34:37 1044382 254.313
16:57:15.1
42.558
42:33:28.8
158.8 15 16:57:17.90 42:34:12.7 141 n/a n/a n/a 147 V=16.7 MASTER-Kislovodsk, Hankasalmi (0.40m), BOOTES-4/MET (0.6m), YaoAn (AST3-3), Montarrenti (0.53m), NOT (2.5m), GTC (10.4m), DDOTI, KAIT (0.76m), Tautenburg (1.34m), HJT (1.5m), Ondrejov D50, Konkoly RC80 (0.8m), Koshka Zeiss-1000, INASAN/Simeiz (1m), Assy-Turgen (AZT-20) 1.400 (GTC: absorption)     BAT: GCN 29844; GCN 29854; GCN 29879
XRT: GCN 29844; GCN 29876; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29844; GCN 29862
Redshift: GCN 29853 (GTC)
210419C 23:27:49 1044236 212.969
14:11:52.6
36.011
36:00:39.6
73.00 8.1 14:11:51.01 36:00:26.5 n/a n/a n/a n/a 156 V>19.22       UVOT: no detection BAT: GCN 29834; GCN 29856
XRT: GCN 29834; GCN 29839; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29834; GCN 29868
GRB Time
[UT]
Trigger
Number
BAT RA
(J2000)
BAT Dec
(J2000)
BAT T90
[sec]
BAT Fluence
(15-150 keV)
[10-7 erg/cm2]
XRT RA
(J2000)
XRT Dec
(J2000)
XRT Time to First
Observation
[sec]
XRT Early Flux
(0.3-10 keV)
[10-11 erg/cm2/s]
UVOT RA
(J2000)
UVOT Dec
(J2000)
UVOT Time to
First Observation
[sec]
UVOT Magnitude Other Observatory Detections Redshift Host Galaxy Comments References
210419A 06:53:41 1044032 86.912
05:47:38.9
-65.452
-65:27:07.2
64.43 7.8 05:47:24.16 -65:30:08.1 127.91 157 n/a n/a 136 V>17.5       UVOT: no detection BAT: GCN 29828; GCN 29838
XRT: GCN 29828; GCN 29830; GCN 29835; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29828; GCN 29841
210413B 23:46:52.45 1043009 182.558
12:10:13.9
55.965
55:57:54.0
1.088 n/a n/a n/a n/a n/a n/a n/a 185000 n/a       XRT: One uncatalogued X-ray source has been detected, but it is below the RASS limit and shows no definitive signs of fading. Therefore, at the present time we cannot confirm this as the afterglow.
UVOT: faint source detected, however, the DECaLs survey shows faint source at this position.
BAT: GCN 29819
XRT: GCN 29827
UVOT: GCN 29912
210411C 15:05:51 1042398 296.601
19:46:24.2
-39.399
-39:23:56.4
12.80 12 19:46:26.74 -39:23:53.4 63.14 n/a 19:46:26.81 -39:23:52.2 66 V=17.43 LCO (1m), VLT, NTT 2.826 (VLT: absorption)     BAT: GCN 29794; GCN 29810
XRT: GCN 29794; GCN 29800; GCN 29807; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29794; GCN 29811
Redshift: GCN 29806 (VLT)
210410A 00:53:16 1042113 269.741
17:58:57.8
45.359
45:21:32.4
52.88 56 17:59:01.05 45:21:42.9 61 n/a n/a n/a 1113 V>17.0 Fermi (GBM & LAT), Ondrejov D50, AGILE, HJT (1.5m), Konus-Wind, AstroSat CZTI     BAT: Due to a telemetry drop-out, no prompt BAT data were available.
UVOT: no detection
BAT: GCN 29793
XRT: GCN 29778; GCN 29790; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29787; GCN 29812
210403A 08:27:13 1040345 2.813
00:11:15.1
-33.024
-33:01:26.4
168.3 27 n/a n/a n/a n/a n/a n/a n/a n/a       Due to a Sun observing constraint, Swift cannot slew to the BAT position until 21:34 UT on 2021 April 14. BAT: GCN 29748; GCN 29754
210402A n/a 1040123 198.265
13:13:03.6
44.510
44:30:36.0
238.7 86 13:13:02.22 44:30:52.3 n/a 1310 n/a n/a n/a V>19.6 LBT, NOT, Fermi (GBM), MASTER-Net     BAT: Due to a ground pass at the time of the GRB, no precise trigger time, location, or light curve data was immediately available.
UVOT: no detection
BAT: GCN 29743; GCN 29761
XRT: GCN 29743; GCN 29750; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29743; GCN 29764
210323B 12:03:33 BAT/GUANO 259.664
17:18:39.4
15.677
15:40:37.2
n/a n/a n/a n/a 100800 n/a n/a n/a n/a n/a       XRT: One uncatalogued X-ray source has been detected consistent with being within the Swift/BAT localization, it is below the RASS limit and shows no definitive signs of fading. Therefore, at the present time we cannot confirm this as the afterglow. BAT: GCN 29701
XRT: GCN 29908
210323A 22:02:18 1038247 317.945
21:11:46.8
25.352
25:21:07.2
1.12 2.4 21:11:47.20 25:22:09.5 85.20 n/a n/a n/a 89 V>17.7 NOT, AZT-33IK (Mondy), Fermi (GBM), Konus-Wind, GTC (10.4m), Gemini-North, Insight-HXMT/HE   r=24.6 (NOT) UVOT: no detection BAT: GCN 29699; GCN 29721
XRT: GCN 29699; GCN 29704; GCN 29705; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29699; GCN 29712
Host: GCN 30000 (NOT)
210321A 07:13:51 1037828 87.887
05:51:32.9
70.109
70:06:32.4
8.21 6.7 05:51:34.99 70:07:50.0 2730.62 n/a 05:51:34.75 70:07:49.8 2735 V=18.44 DDOTI, NOT (2.56m), OSIRIS/GTC (10.4), Xinglong GWAC-F60A, AZT-33IK (Mondy), Konus-Wind 1.487 (OSIRIS/GTC)   Due to an observing constraint, Swift did not slew until T0+43.3 minutes. BAT: GCN 29677; GCN 29691
XRT: GCN 29678; GCN 29681; GCN 29686; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29679; GCN 29697
Radio: GCN 29685 (OSIRIS/GTC)
210318B 03:08:33 1037335 264.228
17:36:54.7
-35.823
-35:49:22.8
14.95 100 17:36:55.88 -35:49:19.2 52 n/a n/a n/a 70 V>18.2 Konus-Wind, Fermi (GBM)     UVOT: no detection BAT: GCN 29663; GCN 29666
XRT: GCN 29663
UVOT: GCN 29663; GCN 29695
GRB Time
[UT]
Trigger
Number
BAT RA
(J2000)
BAT Dec
(J2000)
BAT T90
[sec]
BAT Fluence
(15-150 keV)
[10-7 erg/cm2]
XRT RA
(J2000)
XRT Dec
(J2000)
XRT Time to First
Observation
[sec]
XRT Early Flux
(0.3-10 keV)
[10-11 erg/cm2/s]
UVOT RA
(J2000)
UVOT Dec
(J2000)
UVOT Time to
First Observation
[sec]
UVOT Magnitude Other Observatory Detections Redshift Host Galaxy Comments References
210318A 03:54:31 1037339 33.892
02:15:34.1
-37.755
-37:45:18.0
48.00 6.4 02:15:42.27 -37:46:36.2 123.53 n/a n/a n/a 127 V>18.6       UVOT: no detection BAT: GCN 29662; GCN 29672
XRT: GCN 29662; GCN 29670; GCN 29671; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29662; GCN 29706
210308A 06:37:56 1036227 67.083
04:28:19.9
37.429
37:25:44.4
5.3 32 04:28:18.04 37:26:04.0 84.96 51.8 04:28:17.73 37:26:02.1 95 V>17.84 Fermi (GBM), MONDY AZT-33IK, Konus-Wind       BAT: GCN 29619; GCN 29633
XRT: GCN 29619; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29619; GCN 29630
210307A 08:42:38 1036139 119.244
07:56:58.6
-66.965
-66:57:54.0
262 28 07:56:57.65 -66:58:13.5 90.88 273 n/a n/a 100 V>19.3       UVOT: no detection BAT: GCN 29610; GCN 29632
XRT: GCN 29610; GCN 29624; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29610; GCN 29629
210306B 09:32:14 1036024 331.813
22:07:15.1
10.152
10:09:07.2
24.32 17 n/a n/a n/a n/a n/a n/a n/a n/a Fermi (GBM)     Due to an observing constraint, Swift will not slew to this target. There will be no XRT or UVOT data. BAT: GCN 29601; GCN 29612
210306A 03:53:57 1035994 129.964
08:39:51.4
60.203
60:12:10.8
9.12 57 08:39:50.40 60:12:14.6 75.01 115 08:39:49.98 60:12:19.2 85 V=17.42 DDOTI, iTelescope (0.61m), LCO (1m), Fermi (LAT & GBM), Tautenburg (1.34m), NEXT (0.6m), MITSuME (50cm), Mondy AZT-33IK, DFOT (1.3m), Bok Telescope (2.3m), Konus-Wind, LBT, GIT (0.7m)       BAT: GCN 29597; GCN 29617
XRT: GCN 29597; GCN 29622; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29597; GCN 29636
210305A 19:03:04 1035922 319.808
21:19:13.9
34.548
34:32:52.8
68.6 71 21:19:14.53 34:33:14.5 76.8 n/a n/a n/a 85 V>18.55 Fermi (GBM), Konus-Wind     UVOT: no detection BAT: GCN 29595; GCN 29611
XRT: GCN 29595; GCN 29625
UVOT: GCN 29595; GCN 29615
210226A 04:43:57 1034721 124.153
08:16:36.7
57.585
57:35:06.0
20.80 12 08:16:27.67 57:35:02.2 98.14 n/a n/a n/a 102 V>19.1 Fermi (GBM)     UVOT: no detection BAT: GCN 29568; GCN 29579
XRT: GCN 29568; GCN 29571; GCN 29575; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29568; GCN 29590
210222B 22:37:26 1034325 154.631
10:18:31.4
-14.946
-14:56:45.6
12.82 3.4 10:18:25.38 -14:55:54.1 95.87 n/a 10:18:25.43 -14:55:55.1 101 V=16.80 BOOTES-1B (0.3m), LCO (1m), GOTO, Liverpool, NEXT (0.6m), FORS2/VLT, MASTER-Net, FRAM-ORM (25cm), VIRT (0.5m), Koshka (Zeiss-1000), REM (60cm) 2.198 (FORS2/VLT: absorption)     BAT: GCN 29545; GCN 29561
XRT: GCN 29545; GCN 29560; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29545; GCN 29559
Redshift: GCN 29552 (FORS2/VLT)
210218A 13:35:19 1033328 47.318
03:09:16.3
35.322
35:19:19.2
240 43 03:09:17.67 35:19:26.5 170000 n/a n/a n/a 170000 n/a       Due to a Moon observing constraint, Swift did not slew to the BAT position until 11:37 UT on 2021 February 20.
UVOT: no detection
BAT: GCN 29529; GCN 29537
XRT: GCN 29542; GCN 29573; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29556
210217A 23:25:42 1033264 97.578
06:30:18.7
68.715
68:42:54.0
4.22 6.8 06:30:20.28 68:43:31.0 97.85 n/a 06:30:19.90 68:43:30.6 103 n/a NEXT (0.6m), KAIT (0.76m), Liverpool (2m), Fermi (GBM), DFOT (1.3m), DOT (3.6m)       BAT: GCN 29521; GCN 29534
XRT: GCN 29521; GCN 29525; GCN 29538; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29521; GCN 29555
GRB Time
[UT]
Trigger
Number
BAT RA
(J2000)
BAT Dec
(J2000)
BAT T90
[sec]
BAT Fluence
(15-150 keV)
[10-7 erg/cm2]
XRT RA
(J2000)
XRT Dec
(J2000)
XRT Time to First
Observation
[sec]
XRT Early Flux
(0.3-10 keV)
[10-11 erg/cm2/s]
UVOT RA
(J2000)
UVOT Dec
(J2000)
UVOT Time to
First Observation
[sec]
UVOT Magnitude Other Observatory Detections Redshift Host Galaxy Comments References
210212A 04:25:18 1032183 72.249
04:48:59.8
7.215
07:12:54.0
80.0 8.0 04:49:03.99 07:16:10.8 102.95 97.4 n/a n/a 270 V>19.0       UVOT: no detection
Possible host: NOT (GCN 29498) and Gemini South (GCN 29507)
Possible OT: Mondy (GCN 29522)
BAT: GCN 29487; GCN 29491
XRT: GCN 29487; GCN 29489; GCN 29495; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29487; GCN 29492
210211A 08:43:18 1032024 269.408
17:57:37.9
-46.270
-46:16:12.0
6.1 4.2 17:57:45.55 -46:16:02.1 73.92 n/a 17:57:45.68 -46:16:01.6 78 V>19.8 Fermi (GBM), REM (60cm), MASTER-OAFA       BAT: GCN 29472; GCN 29483
XRT: GCN 29472; GCN 29478; GCN 29484; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29472; GCN 29485
210210A 02:00:27 1031728 262.764
17:31:03.4
14.657
14:39:25.2
6.60 9.8 17:31:04.88 14:39:45.1 82.09 n/a 17:31:05.01 14:39:46.4 85 V=16.95 MASTER-SAAO, OSIRIS/GTC (10.4m), LCO (1m), FRAM-ORM (25cm), CAHA (2.2m), DFOT (1.3m), Konus-Wind 0.715 (OSIRIS/GTC: absorption)     BAT: GCN 29444; GCN 29467
XRT: GCN 29444; GCN 29448; GCN 29452; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29444; GCN 29457
Redshift: GCN 29450 (OSIRIS/GTC)
210209A 21:39:44 1031636 328.097
21:52:23.3
43.545
43:32:42.0
139.4 24 21:52:29.36 43:33:25.2 116.52 398 n/a n/a 126 V>19.1       UVOT: no detection BAT: GCN 29442; GCN 29479
XRT: GCN 29442; GCN 29443; GCN 29449; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29442; GCN 29453
210207B 21:52:08 1031297 270.614
18:02:27.4
53.700
53:42:00.0
95.69 43 18:02:32.33 53:40:55.8 73.93 1090 18:02:32.40 53:40:55.8 82 V=17.61 Devasthal Optical Telescope (3.6m), Konus-Wind, AGILE, KAIT (0.76m), LCO (1m), Insight-HXMT/HE, AstroSat CZTI, GECAM-B       BAT: GCN 29420; GCN 29435
XRT: GCN 29420; GCN 29422; GCN 29427; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29420; GCN 29436
210205A 11:11:17 1030629 347.264
23:09:03.4
56.311
56:18:39.6
22.70 8.7 23:08:52.64 56:17:47.5 134.66 n/a n/a n/a 139 V>19.4       UVOT: no detection BAT: GCN 29397; GCB 29409
XRT: GCN 29397; GCN 29399; GCN 29407; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29397; GCN 29403
210204A 06:29:25 Fermi 109.1
07:16:24.0
9.7
09:42:00.0
n/a n/a 07:48:19.37 11:24:34.2 160900 n/a n/a n/a n/a n/a       Fermi: GCN 29390 XRT: GCN 29413; Evans et al., 2009, MNRAS, 397, 1177
210119A 02:54:09 1017711 282.822
18:51:17.3
-61.767
-61:46:01.2
0.06 0.71 n/a n/a n/a n/a n/a n/a n/a n/a Fermi (GBM), MASTER-OAFA, Insight-HXMT/HE, GECAM-B     Due to a Sun observing constraint, Swift cannot slew to the BAT position until 12:54 UT on 2021 January 26.
While the BAT data alone is insufficient for us to make a definitive judgement as to the nature of the source, our assessment of these data suggests that the event was more likely a short GRB rather than a previously unknown Soft Gamma Repeater (Swift J1851.2-6148). See GCN 29332 for details.
BAT: GCN 29323; GCN 29332
210112A 01:37:03 1016881 219.005
14:36:01.2
33.058
33:03:28.8
107.60 233 14:36:01.47 33:03:15.4 74.25 7100 14:36:01.49 33:03:15.3 83 V>18.5 AGILE, OSN (1.5m), Konus-Wind, CAHA (2.2m), Insight-HXMT/HE, DOT (3.6m)   r'=23.96, z'=23.38 (LBT)   BAT: GCN 29289; GCN 29297
XRT: GCN 29289; GCN 29290; GCN 29295; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29289; GCN 29303
Host: GCN 29456 (LBT)
210104B 21:10:10 1015919 53.561
03:34:14.6
37.951
37:57:03.6
19.94 12 03:34:12.86 37:55:49.6 80.45 n/a n/a n/a 84 V>17.6         BAT: GCN 29243; GCN 29266
XRT: GCN 29243; GCN 29253; GCN 29256; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29243; GCN 29259
GRB Time
[UT]
Trigger
Number
BAT RA
(J2000)
BAT Dec
(J2000)
BAT T90
[sec]
BAT Fluence
(15-150 keV)
[10-7 erg/cm2]
XRT RA
(J2000)
XRT Dec
(J2000)
XRT Time to First
Observation
[sec]
XRT Early Flux
(0.3-10 keV)
[10-11 erg/cm2/s]
UVOT RA
(J2000)
UVOT Dec
(J2000)
UVOT Time to
First Observation
[sec]
UVOT Magnitude Other Observatory Detections Redshift Host Galaxy Comments References
210104A 11:26:59 1015873 103.771
06:55:05.0
64.675
64:40:30.0
32.06 88 06:55:05.47 64:40:33.8 62.72 141 06:55:05.25 64:40:34.0 71 V=16.36 Fermi (GBM), Xinglong GWAC-F60A, BOOTES-4/MET (0.6m), MITSuME (50cm), Assy-Turgen AZT-20, Murikabushi (105cm), MASTER-Tavrida, Nanshan NEXT (0.6m), DOAO (1m), DFOT (1.3m), Konus-Wind, ATLAS, CALET GBM, SARA (0.9m), VIRT (0.5M), GMG (2.4m), SAO RAS (0.5m), AZT-33IK, AROMA-N (14"), AstroSat CZTI, CAHA (2.2m), Konus-Wind       BAT: GCN 29233; GCN 29251
XRT: GCN 29233; GCN 29245; GCN 29260; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29233; GCN 29247
210102C 20:38:11 1015728 235.747
15:42:59.3
-37.231
-37:13:51.6
87.25 39 n/a n/a n/a n/a n/a n/a n/a n/a Fermi (GBM)     Due to a Sun observing constraint, Swift cannot slew to the BAT position until 15:14 UT on 2021 January 06. BAT: GCN 29226; GCN 29231
210102B 09:03:48 MAXI 353.323
23:33:17.5
-21.086
-21:05:09.6
n/a n/a 23:35:16.14 -21:04:55.6 19700 n/a n/a n/a n/a n/a       MAXI: GCN 29223
XRT: Source 1 faded between observations.
XRT: GCN 29230; GCN 29271
201229A 10:59:30 1015088 210.692
14:02:46.1
48.209
48:12:32.4
53.3 13 14:02:45.24 48:11:52.0 111.39 n/a 14:02:45.40 48:11:53.3 117 V>18.48 SAO RAS (1m), AbAO AS-32       BAT: GCN 29192; GCN 29199
XRT: GCN 29192; GCN 29193; GCN 29200; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29192; GCN 29213
201228B 15:21:45 BAT/GUANO 35.594
02:22:22.6
56.015
56:00:54.0
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Fermi (GBM)     Fermi: GCN 29188
This burst was not localized in our low-latency analysis at the time. An updated and improved version of the targeted search pipeline was recently re-run on archival data and this burst was recovered.
BAT: GCN 29985
201223A 17:58:26 1014316 132.735
08:50:56.4
71.176
71:10:33.6
29.0 13 08:51:09.61 71:10:45.3 73.71 n/a 08:51:09.51 71:10:47.4 79 V>17.44 MASTER-Tavrida, Nanshan/NEXT (0.6m), BOOTES-4/MET (0.6m), Fermi (GBM), MITSuME (50cm), iTelescope T18 (0.32m), Xinglong GWAC-F60A, AZT-33IK, Kitab-ISON RC-36, GROWTH-India (0.7m), DFOT (1.3m), AbAO AS-32, Xinglong GWAC       BAT: GCN 29158; GCN 29163
XRT: GCN 29158; GCN 29170; GCN 29171; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29158; GCN 29177
201221D 23:06:34 1014037 171.055
11:24:13.2
42.152
42:09:07.2
0.16 3.9 11:24:14.15 42:08:36.6 87.42 n/a n/a n/a 92 V>19.2 NOT, Lowell Discovery Telescope (4.3m), Konus-Wind, GTC (10.4m), Fermi (GBM), MTT, DOT (3.6m) 1.046 (GTC: emission/absorption) g=23.2 (Archival PS1 Imaging of the Putative Host Galaxy) UVOT: no detection BAT: GCN 29112; GCN 29139
XRT: GCN 29112; GCN 29113; GCN 29119; GCN 29124; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29112; GCN 29129
Redshift: GCN 29132 (GTC)
Host: GCN 29133 (Archival PS1)
201221A 07:09:01 1013852 214.488
14:17:57.1
-45.406
-45:24:21.6
44.5 18 14:17:55.22 -45:24:58.1 136.48 n/a n/a n/a 141 V>18.8 VLT, Fermi (GBM), REM (60cm), Konus-Wind 5.70 (VLT)   UVOT: no detection BAT: GCN 29096; GCN 29116
XRT: GCN 29096; GCN 29097; GCN 29105; GCN 29108; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29096; GCN 29109
Redshift: GCN 29100 (VLT)
201216C 23:07:31 1013243 16.364
01:05:27.4
16.538
16:32:16.8
48.0 450 01:05:28.88 16:30:58.0 2966.80 n/a n/a n/a 2970 V>19.1 Fermi (GBM), VLT, FRAM-ORM (25cm), AstroSat CZTI, MAGIC, Konus-Wind. Liverpool (2.0m) 1.10 (VLT: likely redshift)   Due to an observing constraint, Swift did not slew until T0+46.8 minutes.
UVOT: no detection
BAT: GCN 29061; GCN 29080
XRT: GCN 29064; GCN 29067; GCN 29278; GCN 29280; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29071
Redshift: GCN 29077 (VLT)
201216A 19:00:31 Fermi
BAT-GUANO
201.4872
13:25:56.9
36.3116
36:18:41.8
n/a n/a n/a n/a 21500 n/a n/a n/a n/a n/a Fermi (GBM)     Fermi: GCN 29057
XRT: no detection
BAT: GCN 29059
XRT: GCN 29069; GCN 29137

* The data were put in a different sequence not labeled with the trigger number but the trigger number is correct.

NOTES:

  1. Table does not contain about ~10 weak detections which we did not distribute because we were uncertain about their validity.
  2. All numbers are preliminary and may be revised as we do reprocessing (s/w improvements, thinking/experience improvements).

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