TITLE: GCN CIRCULAR NUMBER: 43129 SUBJECT: GRB 251214B: Swift-BAT refined analysis DATE: 25/12/15 16:41:36 GMT FROM: Rahul Gupta at NASA GSFC <rahul.gupta@nasa.gov> S. Laha (GSFC/UMBC), S. D. Barthelmy (GSFC), R. A. J. Eyles-Ferris (U Leicester), R. Gupta (GSFC), H. A. Krimm (NSF), A. Y. Lien (U Tampa), C. B. Markwardt (GSFC), M. J. Moss (GSFC), D. M. Palmer (LANL), T. Parsotan (GSFC), D. Sadaula (GSFC/UMBC), T. Sakamoto (AGU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 251214B (trigger #1423875) (Eyles-Ferris, et al., GCN Circ. 43089). The BAT ground-calculated position is RA, Dec = 330.222, -9.155 deg which is RA(J2000) = 22h 00m 53.4s Dec(J2000) = -09d 09' 17.3" with an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 99%. The mask-weighted BAT light curve shows a double-peaked structure with a duration of about 10 sec T90 (15-350 keV) is 9.38 +- 0.73 sec (estimated error including systematics). The time-averaged spectrum from T-0.19 to T+9.97 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.79 +- 0.12. The fluence in the 15-150 keV band is 5.0 +- 0.4 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T-0.13 sec in the 15-150 keV band is 2.0 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at https://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1423875 View this GCN Circular online at https://gcn.nasa.gov/circulars/43129. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...