{
  "bibcode": "2021GCN.30916....1T",
  "body": "Aaron Tohuvavohu (U Toronto), James DeLaunay (PSU), Gayathri Raman\n(PSU), Jamie A. Kennea (PSU)  report:\n\nSwift/BAT did not localize SGR 1935+2154 (T0:  2021-10-01 00:04:04.3\nUTC, Fermi/GBM trigger #  654739449) onboard.\n\nThe Fermi/GBM notice, distributed in near real-time, triggered the\nSwift Mission Operations Center operated Gamma-ray Urgent Archiver for\nNovel Opportunities (GUANO; Tohuvavohu et al. 2020, ApJ, 900, 1).\n\nUpon trigger by this notice, GUANO sent a command to the Swift Burst\nAlert Telescope (BAT) to save 200 seconds of BAT event-mode data from\n[-50,+150] seconds around the time of the burst. All the requested\nevent mode data was delivered to the ground.\n\nThe BAT likelihood search, NITRATES (DeLaunay + Tohuvavohu, in prep),\ndetects a burst and localizes it to the position of SGR 1935+2154.\nThe burst is detected in BAT with a duration of less than 64 ms.\n\nThis position is consistent with the Ferm/GBM localization.\n\nGUANO is a fully autonomous, extremely low latency, spacecraft\ncommanding pipeline designed for targeted recovery of BAT event mode\ndata around the times of compelling astrophysical events to enable\nmore sensitive GRB searches.\n\nA live reporting of Swift/BAT event data recovered by GUANO can be\nfound at: https://www.swift.psu.edu/guano/",
  "circularId": 30916,
  "createdOn": 1633111294000,
  "email": "aaron.tohu@gmail.com",
  "subject": "SGR 1935+2154: Swift/BAT-GUANO detection and arcminute localization",
  "submitter": "Aaron Tohuvavohu at U Toronto  <aaron.tohu@gmail.com>",
  "eventId": "SGR 1935+2154"
}