The Echo-Location: aka the BAT Targeted Search Portal

This web application hosts and manages live, autonomous, analyses of BAT data in the form of targeted searches around times provided by other instruments, with the goal of (echo)locating an associated gamma-ray transient.
All information on this site is preliminary and is provided to the broader community on a best effort basis to aid time-critical decision making.
The analyses hosted on this site rely on the GUANO autonomous spacecraft commanding pipeline (Tohuvavohu, Kennea, et al. 2020) and the NITRATES likelihood analysis (DeLaunay and Tohuvavohu, 2022). Please cite these papers if you use information hosted here.
Contact Aaron Tohuvavohu with questions or requests.

It is strongly recommended that you read the documentation before using any information provided here.


Click on a Trigger to see its targeted search report.

Trigger ID Attention DateTime Triggering Instrument Event Name Analysis Status
787275532 2025-12-12 23:38:16.090000 Fermi/GBM Fermi 787275501 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787269458 2025-12-12 21:57:02.120000 Fermi/GBM Fermi 787269427 Complete
787260396 2025-12-12 19:26:00 CALET/GBM CALET 1449602184 Complete
787242614 2025-12-12 14:29:37.560000 Fermi/GBM Fermi 787242582 Complete
787212808 2025-12-12 06:12:52 EP EP WXT Trigger #11916652735 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787209020 2025-12-12 05:09:43.890000 Fermi/GBM Fermi 787208988 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787184616 2025-12-11 22:22:59.280000 Fermi/GBM Fermi 787184584 Complete
787178567 2025-12-11 20:42:10.340000 Fermi/GBM Fermi 787178535 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787177961 2025-12-11 20:32:04.270000 Fermi/GBM Fermi 787177929 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787159694 2025-12-11 15:27:37.620000 Fermi/GBM Fermi 787159662 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787151415 2025-12-11 13:09:39.090000 Fermi/GBM Fermi 787151384 Complete
787113696 2025-12-11 02:40:59.190000 Fermi/GBM Fermi 787113664 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787111173 2025-12-11 01:58:56.850000 Fermi/GBM Fermi 787111141 Complete
787106738 2025-12-11 00:45:01.550000 CALET/GBM CALET 1449448529 Complete
787105481 2025-12-11 00:24:04.580000 Fermi/GBM Fermi 787105449 Complete
787104546 2025-12-11 00:08:29.280000 CALET/GBM CALET 1449446337 Complete
787098923 2025-12-10 22:34:46.480000 CALET/GBM CALET 1449440714 Complete
787097154 2025-12-10 22:05:18.010000 Fermi/GBM Fermi 787097123 Complete
787057610 2025-12-10 11:06:14 IceCube Nu 43378962 Complete
787052944 2025-12-10 09:48:27.630000 Fermi/GBM Fermi 787052912 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
787020476 2025-12-10 00:47:19.687640 CHIME F1143449935 Complete
787012696 2025-12-09 22:37:40.129138 CHIME F1143427361 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786979480 2025-12-09 13:24:03.990000 Fermi/GBM Fermi 786979448 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786948646 2025-12-09 04:50:09.384356 CHIME F1143311335 Complete
786945437 2025-12-09 03:56:40.700000 Fermi/GBM Fermi 786945405 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786938386 2025-12-09 01:59:09.650000 Fermi/GBM Fermi 786938354 Complete
786932726 2025-12-09 00:24:49.600000 Fermi/GBM Fermi 786932694 Complete
786921402 2025-12-08 21:16:05.400000 Fermi/GBM Fermi 786921370 Complete
786913879 2025-12-08 19:10:42.660000 Fermi/GBM Fermi 786913847 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786905458 2025-12-08 16:50:21.314000 SVOM ECLAIRs sb25120806 Complete
786891189 2025-12-08 12:52:32.550000 Fermi/GBM Fermi 786891157 Complete
786881874 2025-12-08 10:17:17.290000 Fermi/GBM Fermi 786881842 Complete
786878794 2025-12-08 09:25:57.390000 Fermi/GBM Fermi 786878762 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786876899 2025-12-08 08:54:22.840000 Fermi/GBM Fermi 786876867 Complete
786844809 2025-12-07 23:59:33.050000 Fermi/GBM Fermi 786844778 Complete
786791991 2025-12-07 09:19:14.400000 EP EP WXT Trigger #01709249380 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786791984 2025-12-07 09:19:07.460000 Fermi/GBM Fermi 786791952 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786755914 2025-12-06 23:17:57.816277 CHIME F1142862063 Complete
786746151 2025-12-06 20:35:15.160000 Fermi/GBM Fermi 786746120 Complete
786742016 2025-12-06 19:26:19.570000 CALET/GBM CALET 1449083814 Complete
786737021 2025-12-06 18:03:04.298348 CHIME F1142822303 Complete
786680204 2025-12-06 02:16:07.730194 CHIME F1142742541 Complete
786679326 2025-12-06 02:01:29.505827 CHIME F1142738452 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786649025 2025-12-05 17:36:28.700153 CHIME F1142658491 Waiting for: ['n_FULLRATE', 'n_SPLITRATE', 'n_OUTFOV', 'n_INFOV']
786648306 2025-12-05 17:24:29.689363 CHIME F1142657868 Complete
786636058 2025-12-05 14:00:22.010000 Fermi/GBM Fermi 786636027 Complete
786635805 2025-12-05 13:56:09.134686 CHIME F1142595647 Complete
786582920 2025-12-04 23:14:44.010000 Fermi/GBM Fermi 786582889 Complete
786568858 2025-12-04 19:20:21.758675 CHIME F1142433472 Complete
786564274 2025-12-04 18:03:57.340000 Fermi/GBM Fermi 786564242 Complete
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