GCN Events

GRB 260131A / EP260131a
importance: 76.00 | latest: 2026-02-02T22:00:00.989Z | circulars: 15 | z=1.434
GRB 250131A / EP250131a
importance: 58.00 | latest: 2026-02-02T22:00:00.989Z | circulars: 2
GRB 260130A
importance: 62.00 | latest: 2026-02-02T11:35:26.425Z | circulars: 5
GRB 260127B
importance: 72.00 | latest: 2026-02-02T03:28:19.786Z | circulars: 10 | z=0.12
GRB 260127A
importance: 74.00 | latest: 2026-02-02T03:09:30.853Z | circulars: 16
EP260131a
importance: 72.00 | latest: 2026-02-01T19:40:28.320Z | circulars: 10 | z=0.937
GRB 260128A / EP260128a
importance: 62.00 | latest: 2026-02-01T16:47:41.479Z | circulars: 10
GRB 260131B
importance: 45.00 | latest: 2026-01-31T20:15:57.666Z | circulars: 1
GRB 260129A
importance: 38.00 | latest: 2026-01-31T20:15:54.312Z | circulars: 2
GRB 260128B
importance: 45.00 | latest: 2026-01-31T20:15:53.740Z | circulars: 3
EP260128a
importance: 32.00 | latest: 2026-01-31T20:15:53.040Z | circulars: 1
GRB 260121A
importance: 45.00 | latest: 2026-01-31T20:15:50.440Z | circulars: 1
GRB 260129B
importance: 32.00 | latest: 2026-01-29T19:56:51.315Z | circulars: 1
GRB 260126A / EP260126a
importance: 55.00 | latest: 2026-01-29T07:03:18.338Z | circulars: 9
IceCube-260125A
importance: 35.00 | latest: 2026-01-28T21:37:15.293Z | circulars: 4
GRB 260125A
importance: 62.00 | latest: 2026-01-27T15:36:17.821Z | circulars: 5
GRB 260120B
importance: 58.00 | latest: 2026-01-26T13:06:35.766Z | circulars: 13
GRB 251222A / EP251222a
importance: 80.00 | latest: 2026-01-26T11:12:41.943Z | circulars: 40 | z=3.171
GRB 260125B
importance: 55.00 | latest: 2026-01-25T11:45:33.503Z | circulars: 2
GRB 260114A
importance: 75.00 | latest: 2026-01-25T04:16:37.109Z | circulars: 23 | z=0.524
GRB 260120A
importance: 40.00 | latest: 2026-01-24T11:33:06.653Z | circulars: 3
GRB 260122B
importance: 55.00 | latest: 2026-01-24T00:54:15.709Z | circulars: 2
GRB 260122.97
importance: 28.00 | latest: 2026-01-22T23:22:27.865Z | circulars: 1
GRB 260119A / EP260119a
importance: 82.00 | latest: 2026-01-22T12:09:42.174Z | circulars: 17 | z=5.47
GRB 260122A
importance: 35.00 | latest: 2026-01-22T09:44:17.646Z | circulars: 1
IceCube-260115A
importance: 70.00 | latest: 2026-01-22T08:15:17.074Z | circulars: 4 | z=0.23
GRB 260120C
importance: 35.00 | latest: 2026-01-22T00:30:53.397Z | circulars: 2
EP260116a
importance: 45.00 | latest: 2026-01-21T19:38:30.440Z | circulars: 9
GRB 251122A / EP251122a
importance: 72.00 | latest: 2026-01-21T17:54:30.175Z | circulars: 16 | z=1.765
GRB 260105A / EP260105a
importance: 56.00 | latest: 2026-01-21T16:05:28.578Z | circulars: 10
GRB 260121.06
importance: 28.00 | latest: 2026-01-21T02:56:37.459Z | circulars: 1
GRB 260101A / EP260101a
importance: 78.00 | latest: 2026-01-20T20:52:27.745Z | circulars: 20 | z=2.623
GRB 251202A / EP251202a
importance: 75.00 | latest: 2026-01-20T16:19:41.218Z | circulars: 21 | z=2.785
GRB 260119.92
importance: 35.00 | latest: 2026-01-19T23:42:41.747Z | circulars: 2
GRB 260119.90
importance: 25.00 | latest: 2026-01-19T22:14:22.243Z | circulars: 1
GRB 251208D
importance: 70.00 | latest: 2026-01-19T20:59:19.353Z | circulars: 8 | z=1.32
GRB 260117A
importance: 55.00 | latest: 2026-01-19T20:06:20.348Z | circulars: 8
GRB 260115A
importance: 55.00 | latest: 2026-01-19T16:33:28.893Z | circulars: 5
GRB 260110A / EP260110a
importance: 55.00 | latest: 2026-01-19T08:24:17.646Z | circulars: 11
GRB 260118.48
importance: 35.00 | latest: 2026-01-18T20:38:22.489Z | circulars: 1
GRB 260117.82
importance: 25.00 | latest: 2026-01-18T16:56:24.827Z | circulars: 1
FRB 20251229A
importance: 20.00 | latest: 2026-01-17T00:23:03.587Z | circulars: 4 | z=0.1
GRB 260111A
importance: 58.00 | latest: 2026-01-16T17:02:10.821Z | circulars: 10
GRB 251230A / EP251230a
importance: 75.00 | latest: 2026-01-14T19:13:21.389Z | circulars: 26 | z=1.73
GRB 260112B
importance: 45.00 | latest: 2026-01-14T15:16:26.618Z | circulars: 2
IceCube-260111A
importance: 55.00 | latest: 2026-01-14T12:42:22.025Z | circulars: 4
GRB 260113.43
importance: 18.00 | latest: 2026-01-13T18:52:27.429Z | circulars: 1
GRB 260113A
importance: 12.00 | latest: 2026-01-13T10:47:55.895Z | circulars: 1
GRB 260112A
importance: 35.00 | latest: 2026-01-12T05:36:31.314Z | circulars: 1
GRB 260109C
importance: 38.00 | latest: 2026-01-09T21:27:52.122Z | circulars: 3
GRB 260105C
importance: 45.00 | latest: 2026-01-09T17:32:30.375Z | circulars: 1
GRB 260109B
importance: 35.00 | latest: 2026-01-09T08:52:04.748Z | circulars: 1
GRB 260102A
importance: 72.00 | latest: 2026-01-09T06:45:08.766Z | circulars: 11
GRB 260109A
importance: 35.00 | latest: 2026-01-09T03:55:04.505Z | circulars: 1
GRB 260104A / EP260104a
importance: 60.00 | latest: 2026-01-09T03:01:10.258Z | circulars: 9
GRB 260107A
importance: 45.00 | latest: 2026-01-08T15:38:08.424Z | circulars: 2
GRB 260105B / EP260105b
importance: 62.00 | latest: 2026-01-07T13:08:28.358Z | circulars: 6
GRB 260103A
importance: 55.00 | latest: 2026-01-05T05:48:29.878Z | circulars: 3
GRB 260104C
importance: 38.00 | latest: 2026-01-05T00:08:31.375Z | circulars: 1
GRB 260104B
importance: 25.00 | latest: 2026-01-04T18:30:45.385Z | circulars: 2
IceCube-251225A
importance: 45.00 | latest: 2026-01-03T09:01:01.763Z | circulars: 3
GRB 260103.08
importance: 35.00 | latest: 2026-01-03T02:28:23.543Z | circulars: 1
GRB 260102B
importance: 35.00 | latest: 2026-01-02T21:23:33.906Z | circulars: 1
GRB 251231.57
importance: 35.00 | latest: 2025-12-31T23:56:31.192Z | circulars: 1
EP251229a
importance: 46.00 | latest: 2025-12-31T10:27:16.056Z | circulars: 6
GRB 251231A
importance: 45.00 | latest: 2025-12-31T00:36:41.880Z | circulars: 1
LIGO/Virgo/KAGRA S251112cm
importance: 90.00 | latest: 2025-12-30T02:12:49.133Z | circulars: 28 | z=0.02
GRB 251226A
importance: 55.00 | latest: 2025-12-29T14:51:57.994Z | circulars: 3
GRB 251129A / EP251129a
importance: 78.00 | latest: 2025-12-28T16:36:39.330Z | circulars: 25 | z=0.505
GRB 251228A
importance: 35.00 | latest: 2025-12-28T05:15:35.846Z | circulars: 2
GRB 251227.07
importance: 28.00 | latest: 2025-12-27T03:56:36.876Z | circulars: 1
GRB 251221A / EP251221a
importance: 62.00 | latest: 2025-12-25T05:09:07.476Z | circulars: 17
GRB 251205A
importance: 75.00 | latest: 2025-12-24T12:30:36.893Z | circulars: 23 | z=1.1
GRB 251220A / EP251220a
importance: 72.00 | latest: 2025-12-23T19:45:40.740Z | circulars: 13 | z=2.375
GRB 251222B / EP251222b
importance: 72.00 | latest: 2025-12-23T14:13:35.370Z | circulars: 3
IceCube-251218A
importance: 45.00 | latest: 2025-12-22T21:43:04.689Z | circulars: 5
GRB 251220B
importance: 55.00 | latest: 2025-12-22T21:25:26.944Z | circulars: 4
GRB 251221B
importance: 35.00 | latest: 2025-12-21T18:56:51.977Z | circulars: 1
GRB 251219A
importance: 48.00 | latest: 2025-12-20T17:45:55.147Z | circulars: 2
GRB 251215A
importance: 55.00 | latest: 2025-12-20T11:59:19.800Z | circulars: 10
GRB 251219.11
importance: 28.00 | latest: 2025-12-19T02:56:55.727Z | circulars: 1
GRB 251214B / EP251214b
importance: 75.00 | latest: 2025-12-18T16:23:01.470Z | circulars: 26 | z=0.7
GRB 251217A
importance: 25.00 | latest: 2025-12-17T10:30:42.788Z | circulars: 2
GRB 251216A
importance: 35.00 | latest: 2025-12-16T15:15:46.586Z | circulars: 2
GRB 251214A / EP251214a
importance: 55.00 | latest: 2025-12-16T04:56:08.182Z | circulars: 10
GRB 251213A
importance: 56.00 | latest: 2025-12-15T16:43:28.232Z | circulars: 5
GRB 251209A
importance: 62.00 | latest: 2025-12-15T13:57:46.111Z | circulars: 7
GRB 251214D
importance: 40.00 | latest: 2025-12-15T13:47:03.888Z | circulars: 2
GRB 251203B
importance: 18.00 | latest: 2025-12-15T11:12:25.589Z | circulars: 8
GRB 251214C
importance: 38.00 | latest: 2025-12-14T13:08:43.956Z | circulars: 1
GRB 251212A / EP251212a
importance: 56.00 | latest: 2025-12-13T20:09:41.763Z | circulars: 6
GRB 251211B
importance: 42.00 | latest: 2025-12-13T04:13:33.688Z | circulars: 3
IceCube-251210A
importance: 55.00 | latest: 2025-12-12T18:25:09.405Z | circulars: 5
GRB 251211.12
importance: 25.00 | latest: 2025-12-11T03:00:33.880Z | circulars: 1
GRB 251211A
importance: 35.00 | latest: 2025-12-11T02:51:35.985Z | circulars: 1
GRB 251124A / EP251124a
importance: 38.00 | latest: 2025-12-10T11:55:55.012Z | circulars: 13
GRB 251130A / EP251130a
importance: 74.00 | latest: 2025-12-10T09:19:25.377Z | circulars: 19 | z=4.035
GRB 251208A
importance: 55.00 | latest: 2025-12-10T06:31:41.775Z | circulars: 5
GRB 251208B
importance: 78.00 | latest: 2025-12-09T18:32:15.819Z | circulars: 8
GRB 251118A / EP251118a
importance: 80.00 | latest: 2025-12-09T17:24:40.380Z | circulars: 31 | z=1.217