TITLE: GCN CIRCULAR NUMBER: 35683 SUBJECT: GRB 240205B: Swift detection of a burst DATE: 24/02/05 22:31:07 GMT FROM: David Palmer at LANL <palmer@lanl.gov> M. J. Moss (GSFC), C. Gronwall (PSU), J.D. Gropp (PSU), K. L. Page (U Leicester) and D. M. Palmer (LANL) report on behalf of the Neil Gehrels Swift Observatory Team: At 22:13:06 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 240205B (trigger=1213095). Swift did not immediately slew due to a Sun constraint. The BAT on-board calculated location is RA, Dec 351.476, -55.132 which is RA(J2000) = 23h 25m 54s Dec(J2000) = -55d 07' 55" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve is only available up to T+8s due to a telemetry gap. The partial light curve shows a complex rise to a count rate of ~10,000 counts/s (15-350 keV) and still rising steeply at 8 sec after the trigger. This GRB is Sun constrained for Swift observations until February 25th. There will therefore not be any XRT or UVOT data collected. Burst Advocate for this burst is M. J. Moss (mikejmoss3 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/) View this GCN Circular online at https://gcn.nasa.gov/circulars/35683. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...