TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2908 SUBJECT: GRB041224: Swift-BAT detection of a soft burst DATE: 04/12/24 22:48:18 GMT FROM: Scott Barthelmy at NASA/GSFC S. Barthelmy (GSFC), C. Markwardt (GSFC/UMD), T. Sakamoto (), L. Barbier, J. Cummings (GSFC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), S. Hunsberger (PSU), H. Krimm (GSFC/USRA), K. McLean, D. Palmer (LANL), A. Parsons (GSFC), G. Sato (ISAS), M. Still (GSFC/USRA), M. Suzuki (Saitama), G. Tagliaferri (OAB) J. Tueller, on behalf of the Swift-BAT team: At 20:20:57 UT, the Swift Burst Alert Telescope (BAT) triggered and located on-board GRB041224. The spacecraft did not autonomously slew to the burst since automated slewing was not yet enabled. The BAT ground-calculated location is RA,Dec 56.200,-6.656 (J2000) with an uncertainty of 7 arcmin (radius, 3-sigma, including our preliminary bore sight alignment correction). This is 40 degrees off the BAT bore sight (33% partially encoded). The lightcurve is multi-peaked with a total duration of ~50 sec in the 15-350 keV band. The burst is soft with a power-law photon index of ~1.7-1.8.