GRB 231104A: Swift-BAT refined analysis
Abstract
Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 231104A (trigger #1194500) (Page et al., GCN Circ. 34938). The BAT ground-calculated position is RA, Dec = 23.824, 83.794 deg which is RA(J2000) = 01h 35m 17.8s Dec(J2000) = +83d 47' 38.7" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 89%. The BAT light curve shows a complex structure with a duration of ~ 80 sec. T90 (15-350 keV) is 46.77 +- 1.54 sec (estimated error including systematics). The time-averaged spectrum from T-13.39 to T+55.84 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.24 +- 0.03. The fluence in the 15-150 keV band is 1.3 +- 0.0 x 10^-05 erg/cm2. The 1-sec peak photon flux measured from T+0.24 sec in the 15-150 keV band is 24.8 +- 0.6 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/1194500/BA/
- Publication:
-
GRB Coordinates Network
- Pub Date:
- November 2023
- Bibcode:
- 2023GCN.34964....1S