TITLE: GCN CIRCULAR NUMBER: 32375 SUBJECT: GRB 220710A: Swift/BAT-GUANO arcminute localization DATE: 22/07/12 20:58:22 GMT FROM: Aaron Tohuvavohu at U Toronto Aaron Tohuvavohu (U Toronto), James DeLaunay (UAlabama), Gayathri Raman (PSU), Jamie A. Kennea (PSU), report: Swift/BAT did not localize GRB 220710A onboard (T0: 2022-07-10T03:29:34 UTC, GECAM trig utn220710_032932_GECAMb). The GECAM notice, distributed in near real-time, triggered the Swift Mission Operations Center operated Gamma-ray Urgent Archiver for Novel Opportunities (GUANO; Tohuvavohu et al. 2020, ApJ, 900, 1). Upon trigger by this notice, GUANO sent a command to the Swift Burst Alert Telescope (BAT) to save 200 seconds of BAT event-mode data from [-50,+150] seconds around the time of the burst. All the requested event mode data was delivered to the ground. The burst is detected in BAT with a duration of ~25 seconds. The burst occurred during a Swift slew. The burst position is found with an image SNR of 20. The BAT position is RA, Dec = 221.592, 20.657 deg which is RA(J2000) = 14h 46m 22.08s Dec(J2000) = 20d 39′ 25.2″ with an uncertainty of 2 arcmin. XRT and UVOT follow-up has been requested Results of follow-up observations will be reported in future circulars. GUANO is a fully autonomous, extremely low latency, spacecraft commanding pipeline designed for targeted recovery of BAT event mode data around the times of compelling astrophysical events to enable more sensitive GRB searches.