TITLE: GCN CIRCULAR NUMBER: 29045 SUBJECT: GRB 201214B: Swift BAT location of short burst DATE: 20/12/15 02:40:30 GMT FROM: David Palmer at LANL K. K. Simpson (PSU), D. M. Palmer (LANL) and A. Tohuvavohu (U Toronto) report on behalf of the Neil Gehrels Swift Observatory Team: At 16:07:46 UT on 2020-12-14, simultaneously with the Fermi GBM detection of GRB 201214B (GCN 29039), BAT triggered (Trigger=1012872) on a rate increase at the 0.064 s timescale and produced an image. This image shows a 6 sigma peak, which was not significant enough to trigger an automated ground notification and repoint. The on-board calculated location ra, dec = 188.032, +9.045 was refined by ground analysis to 187.9710, +9.1031 which is RA(J2000) = 12h 31m 53s Dec(J2000) = 09d 06' 11” with an uncertainty of 2 arcminutes (radius, 90% containment, including systematic uncertainty). The currently-available BAT light curve shows a ~0.1 second long peak, with a possible smaller peak 0.3 seconds earlier. The peak value on a 64 ms timescale is ~3000 counts/s (15-350 keV) at the trigger time. Swift has begun XRT and UVOT observations of this source starting at T0+~28ks using the on-board BAT location (GCN 29043). Automated analysis of the XRT data will be presented online at https://www.swift.ac.uk/ToO_GRBs/00021407 The BAT location is consistent with both the Fermi-GBM position and the IPN annulus (Svinkin, priv. comm.). The temporal and positional coincidence with the Fermi GBM burst convinces us that the BAT location is correct. Burst Advocate for this burst is K. K. Simpson (kira.simpson1984 AT gmail.com). 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/)