TITLE: GCN CIRCULAR NUMBER: 31982 SUBJECT: GRB 220501A: Swift detection of a burst DATE: 22/05/01 20:00:43 GMT FROM: David Palmer at LANL A. D'Ai (INAF-IASFPA), E. Ambrosi (INAF-IASFPA), V. D'Elia (SSDC & INAF-OAR), C. Gronwall (PSU), A. Y. Lien (U Tampa), K. L. Page (U Leicester) and D. M. Palmer (LANL) report on behalf of the Neil Gehrels Swift Observatory Team: At 19:51:51 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 220501A (trigger=1104842). Swift did not slew to the burst location due to an observing constraint. The BAT on-board calculated location is RA, Dec 85.577, +14.033 which is RA(J2000) = 05h 42m 18s Dec(J2000) = +14d 02' 00" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 60 sec. The peak count rate was ~2500 counts/sec (15-350 keV), at ~0 sec after the trigger. Due to a Sun observing constraint, Swift cannot slew to the BAT position until 07:38 UT on 2022 August 04. There will thus be no XRT or UVOT data for this trigger before this time. Burst Advocate for this burst is A. D'Ai (antonino.dai AT inaf.it). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/)