{
  "bibcode": "2021GCN.30325....1T",
  "body": "Aaron Tohuvavohu (U Toronto), James DeLaunay (PSU), Jamie A. Kennea\n(PSU), Gayathri Raman (PSU) report:\n\nSwift/BAT did not trigger on GRB 210626A (T0: 2021-06-26 08:16:15.9\nUTC, Fermi/GBM GCN 30323).\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 burst is detected in BAT with a duration greater than 20 seconds.\nThe burst occurred during a Swift slew.\nUsing the normal BAT imaging technique, we find the location for\nthe GRB with an SNR of 7.6.\n\nThe BAT position is\nRA, Dec = 221.6199,  -1.1512 deg which is\n   RA(J2000)  = 14h 46m 28.78s\n   Dec(J2000) =  -1d 09��� 4.3���\nwith an estimated uncertainty of 5 arcmin.\n\nThis position is consistent with the Ferm/GBM localization (GCN 30323).\n\nXRT and UVOT follow-up has been requested. Results of follow-up\nobservations will be reported in future circulars.\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": 30325,
  "createdOn": 1624721558000,
  "email": "aaron.tohu@gmail.com",
  "subject": "GRB 210626A: Swift/BAT-GUANO detection and arcminute localization",
  "submitter": "Aaron Tohuvavohu at U Toronto  <aaron.tohu@gmail.com>",
  "eventId": "GRB 210626A"
}